Amplify Ch. 1 Thermal Energy Study Guide (HMS)

Temperature is the measurement of...

• The total amount of energy in something.
• How many molecules are in something
• The average speed of the molecules in something.

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Which statement is TRUE? If something gets hotter what will happen to its molecules?

• When something gets hotter the molecules move faster and when something gets colder the molecules move slower.
• When something gets hotter the molecules move slower and when something gets colder the molecules move faster.
• When something gets hotter or colder the molecules continue to move at the same speed.

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Everything is made out of molecules (or atoms).

• True
• False

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The molecules in a bottle are moving around. How would you find the average speed of the particles?

• Add the particle speeds together and divide by 100
• Add the particle speeds together and then divide by the number of particles
• Add the particle speeds together and then multiply by the number of particles

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Which sample has slower-moving particles?

• Sample A
• Sample B
• Both samples have particles moving slow.

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If the temperature of an object increases, what also happens to its particles?

• The particles don't change speed
• The particles speed up
• The particles slow down

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If the temperature of an object decreases, what also happens to its particles?

• The particles speed up
• The particles slow down
• The particles don't change speed

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If the particles of an object increase speed what will happen to the temperature of the object?

• The temperature will increase
• The temperature will decrease
• The temperature will stay the same

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If the particles of an object decrease speed what will happen to the temperature of the object?

• The temperature will decrease
• The temperature will stay the same
• The temperature will increase

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A beaker contains molecules with the speed 10, 7, 3, 6, 4. What is the average speed of the particles?

• 30
• 6
• 5

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