Earthquake Waves Lab Worksheet JUNIOR SEISMOLOGIST LAB // DE 2.4
EARTHQUAKE WAVE DETECTIVES!
CLASSIC TECHBOOK 2.4 4th Grade Edition
MY DETECTIVE NAME:
TODAY'S DATE:
SCIENCE GROUP:
🕵️♂️ YOUR MISSION: When Earth's tectonic plates slip, they send energy waves traveling right through the ground under our feet! Today, you are a science detective. Read the questions below and use what you learned from the Techbook videos to write down your answers!
1
The Great Earthquake Shake
When an earthquake happens, what is actually traveling through the ground to make houses shake miles away? Does the actual dirt and rock travel all that way, or does something else move through them?
2
Push-and-Pull vs. Side-to-Side Waves
Explain how P-waves (Primary waves) move differently than S-waves (Secondary waves). What toys or models (like a Slinky or a whipped rope) did you see in the video that can show how each wave moves?
P-WAVE (PUSH & PULL S-L-I-N-K-Y) S-WAVE (SIDE-TO-SIDE ROPE)
3
Earth's Deep Watery Secret
Scientists found out that S-waves (side-to-side waves) CANNOT travel through liquids, but P-waves (push-and-pull waves) CAN. How did this rule help scientists figure out that Earth has a liquid outer core deep underground?
LOG: DETECTING EARTHQUAKES PAGE 1 OF 2
JUNIOR SEISMOLOGIST LAB // DE 2.4
RECORDERS & EARTHQUAKE RACES
EXPLORE & MAPPING DATA
4
The Magic Shaking Machine
A seismograph is a machine that draws earthquake lines on a rolling paper drum using a heavy hanging pen. Why does the heavy pen stay completely still in the air while the rest of the frame and paper drum shake with the ground?
5
The Great Tectonic Wave Race!
P-waves are fast racers, but S-waves are slower. If both waves start at the same time, why is the time gap between them small near the earthquake starting line, but much bigger when they get far away? How does this gap help scientists find the earthquake?
Fast P-Wave Arrives! Slower S-Wave Arrives! TIME GAP (LAG TIME)
6
The Three-Circle Mystery
If scientists only have data from TWO earthquake recording stations, why is it impossible to pinpoint the exact starting spot of the earthquake? Why do they absolutely need a THIRD station to solve the mystery?
LOG: TRIANGULATION & DATA PAGE 2 OF 2
Earthquake Waves Teacher Guide JUNIOR SEISMOLOGIST LAB // TEACHER KEY
EARTHQUAKE WAVE DETECTIVES
EXEMPLARY ANSWER KEY 4th Grade Rubric
ELEMENTARY FACILITATION TIP: Grade 4 seismic lessons should emphasize *energy movement* rather than particle transport. Look for kids expressing that rocks only vibrate/bump into each other.
1
The Great Earthquake Shake
Focuses on energy movement vs. physical matter traveling.
[EXEMPLARY 4TH GRADE RESPONSE]
Energy is what travels through the ground during an earthquake. The actual dirt and rock do not move all that way. Instead, the rocks just wiggle and bump into each other, passing the energy along, while the rocks stay in the same place.
MISCONCEPTION ALERT: Many fourth graders think earthquakes literally slide blocks of dirt hundreds of miles from the epicenter to their city. Emphasize that the ground just shakes in place.
2
Push-and-Pull vs. Side-to-Side Waves
Differentiating wave motions using physical analogies.
[EXEMPLARY 4TH GRADE RESPONSE]
P-waves push and pull forward and backward, like squeezing and letting go of a Slinky toy. S-waves move side-to-side or up and down, like shaking a rope to make wavy wiggles that travel down the line.
CLASSROOM ACTIVITY: Bring a Slinky and a jump rope into class! Have two students hold the Slinky to show P-waves (compressing coils) and shake the rope to show S-waves (shear wiggles).
3
Earth's Deep Watery Secret
Using wave behaviors to discover planetary layers.
[EXEMPLARY 4TH GRADE RESPONSE]
Since S-waves cannot go through liquids, scientists noticed they got completely blocked deep inside the Earth. But P-waves still went through! This proved to scientists that there is a huge liquid layer of hot, melted rock inside the Earth called the outer core.
GUIDING PROMPT: If students struggle, ask: "If a wave gets blocked by water, and it disappears when traveling through Earth's center, what does that tell us is down there?"
TEACHER KEY: PAGES 1-3 DE 2.4 PAGE 1 OF 2
JUNIOR SEISMOLOGIST LAB // TEACHER KEY
RECORDERS & EARTHQUAKE RACES
EXEMPLARY ANSWER KEY
4
The Magic Shaking Machine
Explaining mechanical inertia to elementary students.
[EXEMPLARY 4TH GRADE RESPONSE]
The pen is very heavy, which makes it lazy and want to stay completely still (this is called inertia). When the earthquake shakes the ground, the machine frame and the paper shake too, but the heavy pen hangs still and writes lines as the paper shakes under it.
DEFINING INERTIA: In 4th grade, simplify inertia as "the physical rule where heavy objects want to stay exactly where they are unless something directly grabs and pushes them."
5
The Great Tectonic Wave Race!
Analyzing the relative speeds and travel-time intervals.
[EXEMPLARY 4TH GRADE RESPONSE]
Since P-waves travel faster, they pull ahead of the slower S-waves. If you are close to the earthquake, they arrive almost together. But the farther they travel, the more the fast P-wave gets ahead! Measuring this "time gap" lets scientists calculate exactly how far away the earthquake is.
ANALOGY CHECK: Relate this to two runners—one fast and one slow. At the beginning of the race, they are side-by-side. By the end, the fast runner has a huge distance gap over the slow runner.
6
The Three-Circle Mystery
Applying overlapping geometry to identify origins.
[EXEMPLARY 4TH GRADE RESPONSE]
With two stations, you draw two big circles of distance, and they overlap at two different spots. You don't know which spot is the real earthquake! By adding a third station and drawing a third circle, all three circles will cross at only ONE exact spot.
VISUAL DEMO: Draw two circles on a whiteboard to show they cross in two places. Ask: "How do we know which one is the real earthquake?" Then, draw the third circle to show the single point of intersection.
TEACHER KEY: PAGES 4-6 DE 2.4 PAGE 2 OF 2
Predicting Weather Lab Worksheet WEATHER FORECASTER HQ // DE 4.2
WEATHER DETECTIVE LOG
CLASSIC TECHBOOK 4.2 Page 1 of 2
METEOROLOGIST NAME:
FORECAST DATE:
WEATHER STATION ID:
Mission Clue Investigation & Student Answer Log 1 The Weight of Air Concept: Pressure Even though we can't see or feel it, the air above us actually has weight and pushes down on us! What is this "air push" called? If this push suddenly gets weaker (drops), what kind of weather is probably on its way?
|
| 2 Happy Highs & Stormy Lows Concept: Systems |
Scientists talk about "High Pressure" (heavy air pressing down) and "Low Pressure" (light air rising up). Why does heavy, sinking air give us happy, sunny days, while light, rising air brings clouds and rain?
|
| 3 The Weather Tools Concept: Tools |
Imagine you are building your own backyard weather station! How does a barometer help you measure the air's push, and how does an anemometer help you measure the wind? How do they help you get ready for a storm?
|
| 4 Giant Air Bubbles Concept: Air Masses |
Sometimes, a giant bubble of freezing cold air from Canada meets a giant bubble of warm, wet air from the ocean. What is the science name for these giant bubbles of air, and what happens when they bump into each other?
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LOG: FORECASTING PRESSURE LOG (1-4) PAGE 1 OF 2
WEATHER FORECASTER HQ // DE 4.2
WEATHER DETECTIVE LOG
CLASSIC TECHBOOK 4.2 Page 2 of 2
Mission Clue Investigation & Student Answer Log 5 The Shovel Wave Concept: Cold Front In the video, you saw a **cold front** moving in. Why does the heavy cold air act like a shovel or a wedge, pushing the warm air straight up into the sky? What kind of quick, scary storms does this make?
|
| 6 The Ramp Slide Concept: Warm Front |
Now, think about a **warm front**. Why does the warm air gently slide up and over the cold air like a slide or a ramp instead of pushing it away? What kind of steady, rainy weather does this bring?
Predicting Weather Teacher Guide WEATHER FORECASTER HQ // TEACHER KEY
WEATHER DETECTIVE REFERENCE GUIDE
EXEMPLARY KEY Page 1 of 2
EVALUATOR NOTE: This key matches the 2-page table format. Use the prompt hints to steer students toward physical observations during science rotations.
Mission Clue Evaluation Rubric & Teaching Tips 1 The Weight of Air Concept: Pressure Q: What is "air push" called? What happens when it drops?
[EXEMPLARY RESPONSE] The push of air is called **air pressure**. If this air push gets weaker (drops), a Low Pressure system is coming, which brings stormy, rainy, and cloudy weather.
TEACHING TIP: Clear up the common misconception that air has "zero weight" because we cannot see it.
|
| 2 Happy Highs Concept: Systems |
Q: Why does sinking air give sunny days, while rising air brings storms?
[EXEMPLARY RESPONSE] High pressure is heavy air sinking down, which stops clouds from forming and keeps skies sunny. Low pressure is light air rising up into the cold sky, which forms storm clouds.
MEMORY AID: High Pressure = Happy Days; Low Pressure = Lousy Weather.
|
| 3 The Weather Tools Concept: Tools |
Q: What do a barometer and anemometer measure? How do they help us predict storms?
[EXEMPLARY RESPONSE] A **barometer** measures the air's push (air pressure), and an **anemometer** measures wind speed. If the push drops and wind speed rises, a windstorm is coming.
TEACHING TIP: Show students a model cup-anemometer and explain that faster spins equal higher speed.
|
| 4 Giant Air Bubbles Concept: Air Masses |
Q: What is the science name for giant air bubbles? What happens when they bump?
[EXEMPLARY RESPONSE] These giant bubbles are called **air masses**. When they collide, they form a boundary called a **front**, which pushes wet air up to make storms.
TEACHING TIP: Help students realize that air masses inherit temperature/humidity from where they form.
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TEACHER LOG: FORECAST KEY (1-4) PAGE 1 OF 2
WEATHER FORECASTER HQ // TEACHER KEY
WEATHER DETECTIVE REFERENCE GUIDE
EXEMPLARY KEY Page 2 of 2
Air Masses and Fronts Slideshow ARIZONA SCIENCE STANDARD 4.E1U1.8 Grade 4 Meteorology
AIR MASSES &
WEATHER FRONTS!
Let's track and discover the giant air bubbles that make our weather change!
MISSION START // DE 4.2 SLIDE 1 OF 6
KID-FRIENDLY EXAMPLES STATION DATA
Giant Air Bubbles!
An Air Mass is like a giant balloon or bubble of air that shares the same temperature and moisture.
🥶 Freezer Air: Opening a freezer on a hot day!
🥵 Shower Steam: A hot, wet bathroom after a bath!
🥶 COLD & DRY Like a giant freezer bubble! 🥵 WARM & WET Like a giant steamy shower! NORTH AMERICAN AIR BUBBLES
Map of giant air bubbles clashing over the land!
COLLECTING DATA // 4.E1U1.8 SLIDE 2 OF 6
THE FRONT LINES ATMOSPHERIC CLASH
When Air Masses Collide!
Because these giant bubbles are so different, they do not mix together . It is like trying to mix oil and water!
What is a Weather Front?
A **Front** is the battle line where two air masses meet. This clashing boundary is where almost all our dramatic storms, wind, and rain happen!
ANALYZING PATTERNS // 4.E1U1.8 SLIDE 3 OF 6
COLD FRONT MODEL DENSE & POWERFUL
The Cold Front
🚧 "The Speedy Shovel"
Think of a heavy **snow shovel** or **bulldozer**! Cold air is heavy and fast.
It shoves *under* the light warm air and launches it up into the sky!
Results: Tall storm clouds, heavy downpours, lightning, and a sudden drop in temperature!
WARM AIR (Light & Lazy) COLD AIR (Heavy Shovel) KICKED STRAIGHT UP! COLD FRONT: ACTS LIKE A SPEEDY SHOVEL
Cold air shoves warm air up, sparking fast storms!
INTERPRETING DATA // 4.E1U1.8 SLIDE 4 OF 6
WARM FRONT MODEL LIGHT & SLOW
COLD AIR (Heavy Dome) WARM AIR (Gentle Ramp) GENTLY CLIMBS OVER COLD AIR Stratus Clouds WARM FRONT: ACTS LIKE A GENTLE RAMP
Warm air climbs over cold air, making steady rain!
The Warm Front
🛝 "The Gentle Ramp"
Think of a **playground slide** or **wheelchair ramp**! Warm air is light and lazy.
It gently slides up and over the heavy cold air mass instead of fighting it.
Results: Flat gray clouds, long steady rain, and a slow warm-up!
INTERPRETING DATA // 4.E1U1.8 SLIDE 5 OF 6
Weather Climate Exit Ticket DAILY EXIT TICKET // DE 4.3
WEATHER VS. CLIMATE!
ARIZONA STANDARD 4.E1U1.8 1-Page Exit Pass
STUDENT NAME:
TODAY'S DATE:
SCIENCE GROUP:
1
Right Now vs. Long Term
If you look out your classroom window right now, are you seeing the **weather** or the **climate**? Explain what makes these two words different from each other.
2
Arizona's Changing Skies
In the desert of Phoenix, it is usually hot and dry. But high up in the mountains of Flagstaff, it is cool and snowy! Why does geography (like mountains vs. flat land) change a city's climate?
3
Sun Angles and Solar Power
In the video, we saw how the Sun shines on Earth. Why does the middle of the Earth (the Equator) receive hot, direct sunlight, while the North and South Poles only get weak, slanted sunlight?
DIRECT SUNLIGHT RAYS North Pole (Slanted Ray) Equator (Direct Ray!) South Pole (Slanted Ray)
4
The Giant Ocean Conveyor Belt
According to the video, giant ocean currents travel around the world like an underwater conveyor belt. How do warm and cold ocean currents change the climate of cities on the coast?
LOG: 4.3 CLIMATE PATTERNS PAGE 1 OF 1
Weather Climate Exit Key DAILY EXIT TICKET KEY // DE 4.3
WEATHER VS. CLIMATE!
EXEMPLARY ANSWER KEY 1-Page Rubric
CLIMATE EVALUATION TIP: Ensure 4th graders understand that *weather* is a daily snapshot (sunny today, rainy tomorrow) while *climate* is the overall pattern over many decades.
1
Right Now vs. Long Term
Measuring intervals: day-to-day conditions vs. 30-year averages.
[EXEMPLARY 4TH GRADE RESPONSE]
I am seeing the **weather** when I look out the window. Weather is what is happening right now outside (like rain, snow, or sunshine). **Climate** is the long-term pattern of weather over a very long time (like 30 years) in a certain place.
COMMON MISCONCEPTION: Students often think "climate" is just weather on a very hot day. Reinforce that climate is a statistical pattern of history.
2
Arizona's Changing Skies
Connecting altitude/geography to local climate differences.
[EXEMPLARY 4TH GRADE RESPONSE]
Mountains are much higher in the sky, where the air is thinner and cooler. This altitude keeps cities like Flagstaff cold and snowy, while flat desert cities like Phoenix stay hot because they are closer to sea level and trap heat.
AZ STANDARDS ALIGNMENT: Connect this directly to Arizona's local geography. Use Flagstaff vs. Yuma/Phoenix as your main regional examples.
3
Sun Angles and Solar Power
Explaining how latitude and solar curvature determine temperature zones.
[EXEMPLARY 4TH GRADE RESPONSE]
Because Earth is round like a ball, the middle (the Equator) points directly at the Sun and gets hit with strong, straight rays. But the top and bottom of Earth curve away, so the sunlight hits them at a slant, spreading out the energy and making them cold.
EASY DEMO: Shine a flashlight straight at a globe's equator (makes a bright circle), then slide it up to the poles (makes a faint, elongated oval) to show how rays spread out.
4
The Giant Ocean Conveyor Belt
Analyzing ocean currents as thermal conveyor belts.
[EXEMPLARY 4TH GRADE RESPONSE]
Warm ocean currents act like giant heaters. When they flow past a coast, they warm up the air above them, keeping coastal cities nice and mild. Cold currents do the opposite, acting like giant AC units that cool coastal air.
VIDEO KEY CONCEPT: Discovery Techbook video highlights that the Gulf Stream keeps Europe warmer than other places at the same latitude.
TEACHER LOG: 4.3 CLIMATE KEY PAGE 1 OF 1
Weather Hazards Exit Ticket DAILY EXIT TICKET // DE 4.3
WEATHER HAZARD SAFEKEEPING
ARIZONA STANDARD 4.E1U2.10 Natural Hazards
SAFETY DEPUTY (NAME):
TODAY'S DATE:
SCIENCE GROUP:
1
The Lightning Catcher
In the video, we saw how a **lightning rod** works on top of tall buildings. How does this metal rod safely catch lightning and guide it into the ground? Why does this save the building from catching fire?
Ground Plate Lightning hits rod! Guides electricity safely to dirt.
2
Arizona Desert Flash Floods
Arizona has sudden, dangerous **flash floods** in the summer. Why does heavy rain on hard, dry desert dirt flow over the ground as a flood instead of soaking in? What should you do to stay safe?
3
Giant Spinning Hurricanes
Hurricanes are massive, spinning storms that form over warm ocean waters. What dangerous hazards do hurricanes bring when they crash into coastlines, and what is the safest plan for families living near the beach?
4
Tornado Sheltering Secrets
If a tornado warning is issued in a community, what are the safest places to shelter inside a school or home? Why are these spots much safer than standing near windows?
LOG: 4.3 WEATHER HAZARDS PAGE 1 OF 1
Weather Hazards Exit Key DAILY EXIT TICKET KEY // DE 4.3
WEATHER HAZARD SAFEKEEPING
EXEMPLARY ANSWER KEY 1-Page Rubric
HAZARD REDUCTION TIP: Arizona Standard 4.E1U2.10 emphasizes *engineering solutions*. Guide fourth graders to recognize human ingenuity in designing safety tools.
1
The Lightning Catcher
Evaluating engineering designs to redirect electrostatic discharge.
[EXEMPLARY 4TH GRADE RESPONSE]
A lightning rod is a tall metal pole on a roof. Because metal is a great conductor, the lightning hits the rod instead of the building. The rod is connected to a wire that carries the electricity safely into the dirt, protecting the building from fires.
ENGINEERING CONCEPT: Make sure students use words like "conduct", "guide", or "carry". The rod doesn't "destroy" lightning; it redirects it safely.
2
Arizona Desert Flash Floods
Understanding runoff behavior on baked arid soils.
[EXEMPLARY 4TH GRADE RESPONSE]
Desert dirt is baked hard by the hot sun and acts like cement. When sudden heavy storms hit, the water cannot soak into the hard soil quickly enough, so it runs off as a flood. To stay safe, you should head to high ground immediately.
SAFETY SLOGAN: Teach students the official National Weather Service slogan: **"Turn Around, Don't Drown!"** Remind them to never play in flood waters or washes.
3
Giant Spinning Hurricanes
Analyzing hurricane coastal hazards and early evacuation safety.
[EXEMPLARY 4TH GRADE RESPONSE]
Hurricanes bring giant storm waves (storm surge), heavy flooding rain, and extremely strong winds that can destroy homes. The safest plan is to evacuate, which means leaving the coastal beach area and driving inland to high ground before the storm hits.
HURRICANE TRACKING: Remind students that because of space satellites, we can predict hurricanes days in advance. This gives families plenty of warning time to evacuate safely.
4
Tornado Sheltering Secrets
Evaluating storm-sheltering positions and architectural safety.
[EXEMPLARY 4TH GRADE RESPONSE]
The safest spots are inside rooms with no windows, like a basement, a closet, or a central hallway. Windows are very dangerous because strong winds can shatter the glass, causing flying glass injuries.
DRILL REINFORCEMENT: Connect this question to your school's official tornado or severe weather drill locations to build real-world preparedness.
TEACHER KEY: 4.3 WEATHER HAZARDS PAGE 1 OF 1
Weather Hazards MCQ Exit Ticket DAILY EXIT TICKET // DE 4.3
WEATHER HAZARDS EXIT TICKET
ARIZONA STANDARD 4.E1U2.10 Natural Hazards
STUDENT NAME:
TODAY'S DATE:
1
Desert Flash Floods
When heavy monsoon rain hits the hard, dry desert soil, why does it quickly turn into a dangerous **flash flood**?
A) The desert plants drink all the water instantly.
B) The hard ground acts like cement, making water flow over it.
C) Ocean waves travel directly into the desert cities.
D) The air is too cold for rain to soak in.
2
Lightning Rod Protection
What is the main engineering job of a metal **lightning rod** installed on top of a tall building?
A) To attract storms so it rains more on the building.
B) To safely catch lightning and guide its path into the ground.
C) To keep the building warm during freezing winter storms.
D) To spin fast in the wind and measure wind speed.
3
Hurricane Safekeeping
Hurricanes are giant, spinning storms that form over warm ocean waters. If a major hurricane is heading toward a coastal beach town, what is the safest plan for families living there?
A) Go swimming in the ocean to ride the massive storm waves.
B) Evacuate (move away from the coast) to a safer, higher inland town.
C) Stay directly on the beach inside a small nylon camping tent.
D) Climb onto the roof of your house to watch the storm arrive.
4
Tornado Sheltering
When a tornado warning is issued, which of the following is the **safest** place to take shelter inside a house or school?
A) Stand next to a large glass window to watch the funnel.
B) Go outside immediately to the open playground or field.
C) Move to an inside room with no windows, like a closet or bathroom.
D) Climb onto the roof of the building to get high up.
LOG: 4.3 WEATHER HAZARDS EXIT TICKET PAGE 1 OF 1
Weather Hazards Quiz Key DAILY EXIT TICKET KEY // DE 4.3
WEATHER HAZARDS EXIT TICKET
EXEMPLARY ANSWER KEY 1-Page Rubric
STUDENT NAME:
TODAY'S DATE:
1
Desert Flash Floods
Evaluating soil runoff behavior in arid environments.
A) The desert plants drink all the water instantly.
B) The hard ground acts like cement, making water flow over it.
C) Ocean waves travel directly into the desert cities.
D) The air is too cold for rain to soak in.
Explanation: Dry, baked desert clay cannot absorb large volumes of sudden monsoon rain quickly, creating heavy surface runoff.
2
Lightning Rod Protection
Evaluating natural hazard engineering.
A) To attract storms so it rains more on the building.
B) To safely catch lightning and guide its path into the ground.
C) To keep the building warm during freezing winter storms.
D) To spin fast in the wind and measure wind speed.
Explanation: Metal lightning rods provide a low-resistance path, grounding the electrical current safely away from flammable structure materials.
3
Hurricane Safekeeping
Understanding coastal hurricane evacuation procedures.
A) Go swimming in the ocean to ride the massive storm waves.
B) Evacuate (move away from the coast) to a safer, higher inland town.
C) Stay directly on the beach inside a small nylon camping tent.
D) Climb onto the roof of your house to watch the storm arrive.
Explanation: Due to early satellite tracking, coastal residents are warned days in advance to evacuate inland to avoid high storm surges and wind damage.
4
Tornado Sheltering
Analyzing architectural shelter strategies.
A) Stand next to a large glass window to watch the funnel.
B) Go outside immediately to the open playground or field.
C) Move to an inside room with no windows, like a closet or bathroom.
D) Climb onto the roof of the building to get high up.
Explanation: Window glass shatters easily in vortex-strength winds. Interior rooms with thick drywall boundaries offer structural safety.
TEACHER KEY: 4.3 WEATHER HAZARDS EXIT TICKET PAGE 1 OF 1
