Earth Masters Review Worksheet Earth Masters
Unit 4 Quiz Review Guide
Investigator:
Date:
Part 1: Earth's Water Supply
1. Earth is often called the "Blue Planet." However, most of our water is not drinkable. Look at the data below and choose the pie chart that correctly represents the ratio of Saltwater to Freshwater .
• Saltwater (Oceans): ~97%
• Freshwater (Glaciers, Lakes, Rivers): ~3%
A. 50% Saltwater / 50% Freshwater
B. 10% Saltwater / 90% Freshwater
C. 97% Saltwater / 3% Freshwater
CHART A
CHART B
CHART C
Part 2: The Rock Record
LAYER A
LAYER B
LAYER C
2. Use the diagram to complete the following statements:
The oldest fossils are found in Layer
because it is the
layer.
3. True or False?
T / F
Fossils in Layer A are younger than fossils in Layer B.
T / F
New rock layers usually form on top of older layers.
Part 3: Shifting Earth
4. Match the plate boundary terms to their correct definition:
Plate Boundary: The place where two tectonic plates meet.
Earthquakes: Often occur due to the sudden movement of plates.
Critical Thinking:
Why are volcanoes and earthquakes most common near the edges of continents or along the ocean floor, rather than in the middle of a continent like Kansas?
Part 4: The Great Cycle
5. Fill in the blanks for the water cycle steps shown in the diagram:
A:
(Water turns into gas)
B:
(Clouds form)
C:
(Rain or snow falls)
D:
(Water flows over land)
A B C D
6. Modelling the Cycle
In a classroom model, a student uses a bright lamp shining on a bowl of water covered by a plastic lid.
What does the lamp represent?
What is its job in the cycle?
Part 5: C.E.R. Investigator Challenge
Scenario:
"A large lake is experiencing extreme heat for several years. Evaporation is happening faster than ever, but there has been zero precipitation (rain or snow) during this time."
Prompt: Predict what will happen to the lake's water levels over time and explain why using the water cycle.
CLAIM
EVIDENCE
REASONING
Earth Masters Answer Key Answer Key
Earth Masters Review Guide
Teacher Resource
Part 1: Earth's Water Supply
1. Correct Chart: Chart C
Rationale: 97% of Earth's water is salt (oceans), leaving only 3% as freshwater (glaciers, groundwater, lakes, rivers). Chart C shows a tiny sliver for freshwater.
Part 2: The Rock Record
2. Fill-in-the-blank:
"The oldest fossils are found in Layer C because it is the bottom layer."
3. True or False:
• Fossils in Layer A are younger than fossils in Layer B: TRUE
• New rock layers usually form on top of older layers: TRUE
Part 3: Shifting Earth
4. Definitions: (Both statements in the worksheet are correct matches as written).
Critical Thinking:
"Volcanoes and earthquakes occur at plate boundaries where tectonic plates interact (push together, pull apart, or slide past). Locations in the middle of a plate, like Kansas, are stable and away from these active interaction zones."
Part 4: The Great Cycle
5. Steps:
A: EvaporationB: CondensationC: PrecipitationD: Runoff
6. Model:
Lamp: Represents the Sun.
Role: Provides heat energy to drive evaporation.
Part 5: C.E.R. Answer Guide
Claim: The lake's water levels will decrease significantly and the lake may eventually dry up.
Evidence: The scenario states that evaporation is happening "faster than ever" while precipitation is at "zero" for several years.
Reasoning: The water cycle is a balance of water leaving the surface (evaporation) and returning to it (precipitation). If water is constantly leaving but never returning, the total amount of water in the lake must go down. Without the return of water through rain or snow, the lake loses its source of replenishment.
Earth Masters Review Slides Earth Masters
Unit 4 Quiz Review
Blue Planet?
Oceans contain 97% of Earth's water.
Freshwater (Lakes, Rivers, Ice) is only 3%.
Saltwater
Freshwater
The Rock Record
Top
Youngest
Bottom
Oldest
Law of Superposition
In undisturbed rock layers, the oldest layer is always at the bottom.
Think: Like a laundry basket!
Shifting Borders
Plate Boundaries
The most geologically active places on Earth occur where plates MEET.
Earthquakes
Volcanoes
Look for the lines on the map!
Activity happens at the Edges, not the centers.
The Great Cycle
Evaporation
Liquid → Gas
Condensation
Gas → Clouds
Precipitation
Rain, Snow, Hail
Runoff
Flowing to Ocean
Science Lab Model
The Lamp Question
In a water cycle model, a bright lamp represents the SUN.
ROLE: Heat Energy
Without the heat from the lamp/sun, evaporation cannot happen!
Clay = Land
Bowl of Water = Lake/Ocean
Lid = Atmosphere/Clouds
Investigator Challenge
Claim
What is your direct answer to the question?
"The lake will..."
Evidence
What facts or data did you see in the scenario?
"The text says..."
Reasoning
Explain how your evidence supports your claim.
"This happens because..."
You are ready for the quiz!
