Amplify Thermal Energy Chapter 2

When a thing gets ______, it's molecules are moving slower.

Mandy earns money by delivering groceries. She earned $10 on Monday, $4 on Tuesday, $4 on Wednesday, $7 on Thursday, and $5 on Friday. What is the average amount of money Mandy earned per day?

• $3

• $4

• $5

• $6

Which of the following temperatures are the coldest?

• 10℃

• 25℃

• 70℃

• 75℃

When things get colder, their molecules are moving ________.

If the molecules that make up a sample speed up, what else happens?

• the temperature of the sample increases

• the temperature of the sample decreases

• the temperature of the sample stays the same

• the molecules of the sample slow down

To find the average of a set of numbers, add up all the items and divide by...

• 2

• the minimum

• the maximum

• the number of items

If the temperature of a rock is absolute zero, what would happen to the molecules?

• they would dissapear

• they would not be moving at all

• they would be moving very fast

• they would be moving very slowly

molecule

• a group of atoms near each other

• a group of atoms joined together

• three atoms joined together

• protons and neutrons joined together

Stationary objects have kinetic energy.

• true

• false

Answer explanation

Kinetic energy is energy of MOTION.

Mandy earns money by delivering groceries. She earned $4 on Monday, $7 on Tuesday, $5 on Wednesday, $4 on Thursday, and $5 on Friday. What is the average amount of money Mandy earned per day?

• $3

• $4

• $5

• $6