Physical Science Bell Work Slides
Daily Warm-Up Deck
Aug 31 – Sept 3, 2026
Physical Science
Bell Work Challenge
Start each day with a quick formative review question. Select the best answer on your response sheet.
4 Daily Questions 3 Multiple-Choice Options
Ready • Think • Respond
Monday • 08/31 Physical Science Bell Work
3 Minutes
Is the formation of a precipitate a chemical reaction? Why or why not?
A
Yes, because two liquids react to form a new insoluble solid substance with unique properties.
B
No, because the substances only undergo a physical phase change like water freezing into ice.
C
No, because the solid particles were already formed and simply settled to the bottom over time.
Write your selected letter (A, B, or C) on your bell work sheet. 1 of 4
Tuesday • 09/01 Physical Science Bell Work
3 Minutes
How can the formation of a precipitate be useful in industry?
A
It prevents chemicals from ever reacting or forming solid byproducts during processing.
B
It can make useful materials like rubber and chalk.
C
It instantly turns liquid solutions into gases so factory tanks do not need cleaning.
Write your selected letter (A, B, or C) on your bell work sheet. 2 of 4
Wednesday • 09/02 Physical Science Bell Work
3 Minutes
What is the primary difference between solubility and a suspension?
A
Solubility is when a solute dissolves evenly at a molecular level; a suspension has visible particles that settle out.
B
Solubility only happens in gases; suspensions only occur when solids mix with other dry solids.
C
Solubility creates cloudy mixtures that can be filtered; suspensions create completely clear solutions.
Write your selected letter (A, B, or C) on your bell work sheet. 3 of 4
Thursday • 09/03 Physical Science Bell Work
3 Minutes
Why does temperature affect the rate of chemical reactions?
A
Higher temperature causes molecules to grow larger in size, making them easier to break apart.
B
Higher temperature gives particles more kinetic energy, causing faster and more energetic collisions.
C
Higher temperature changes the atomic numbers of the reactants so they react instantly.
Write your selected letter (A, B, or C) on your bell work sheet. 4 of 4
Earth Science Bell Work Slides
Daily Warm-Up Deck
Aug 31 – Sept 3, 2026
Earth Science
Bell Work Challenge
Engage your thinking at the start of each class. Select the best multiple-choice answer on your response sheet.
4 Daily Questions 3 Multiple-Choice Options
Observe • Hypothesize • Answer
Monday • 08/31 Earth Science Bell Work
3 Minutes
What is the primary role of Earth’s layers in creating its magnetic field?
A
Convection currents of molten iron and nickel in the liquid outer core generate electrical currents that create the field.
B
The solid continental crust rubs against the atmosphere to produce an envelope of static electricity.
C
Deep ocean trenches absorb magnetic cosmic rays and channel them inward to the solid mantle.
Write your selected letter (A, B, or C) on your bell work sheet. 1 of 4
Tuesday • 09/01 Earth Science Bell Work
3 Minutes
What is Pangaea?
A
An ancient supercontinent that existed when all of Earth’s modern landmasses were joined into one large landmass.
B
A massive underwater mountain ridge system formed exclusively by underwater volcanic eruptions.
C
The original primeval ocean that covered Earth before any solid continental rock was formed.
Write your selected letter (A, B, or C) on your bell work sheet. 2 of 4
Wednesday • 09/02 Earth Science Bell Work
3 Minutes
What is the effect of sea-floor spreading on oceanic crust?
A
It continuously creates new oceanic crust at mid-ocean ridges, gradually pushing older crust outward.
B
It compresses ocean basins together, causing all ocean crust to rise above sea level as mountain ranges.
C
It permanently freezes the oceanic crust in place so that continental drift can no longer occur.
Write your selected letter (A, B, or C) on your bell work sheet. 3 of 4
Thursday • 09/03 Earth Science Bell Work
3 Minutes
Will Earth’s landmasses ever come back together into a supercontinent like Pangaea?
A
No, because tectonic plates stopped moving after Pangaea broke apart millions of years ago.
B
Yes, because tectonic plate movement is cyclical and continues to assemble and disperse supercontinents over hundreds of millions of years.
C
