Investigating Heat Study Guide

When objects are hotter, how do the molecules move?

• Slowly

• Quickly

• Randomly

• Not at all

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NGSS.MS-PS1-4

What is heat?

• The movement of energy from one object to another

• The movement of molecules in a circle

• The stopping of energy in an object

• The cooling of an object

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Why does your body sweat when you are hot?

• To make you feel sticky

• To cool the body as perspiration evaporates

• To increase body temperature

• To stop energy movement

What is the difference between a conductor and an insulator?

• A conductor transfers heat easily, while an insulator does not

• A conductor stops heat, while an insulator transfers it

• Both transfer heat equally

• Neither transfers heat

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Calculate the rate of heat transfer for an object with an initial temperature of 50 degrees Celsius and a final temperature of 40 degrees Celsius after being observed for 5 minutes.

• 1 °C/min

• 2 °C/min

• 3 °C/min

• 4 °C/min

Tags

NGSS.MS-PS1-4

What is the main purpose of evaporation in the body?

• To increase body temperature

• To cool the body

• To stop sweating

• To make the body sticky

Why does the air feel cold when a volleyball contains too much air and is released?

• The air is naturally cold.

• The air is heated by the sun.

• The Joule-Thompson effect causes the air to feel cold when it expands.

• The air is mixed with water.

Tags

NGSS.MS-PS1-4

What type of heat transfer occurs when a metal spoon is placed in hot soup?

• Radiation

• Convection

• Conduction

• Evaporation

What is the Joule-Thompson effect related to?

• Temperature increase

• Temperature decrease

• Air compression and expansion

• Water boiling

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is an example of a phase change?

• Explosion

• Melting ice

• Color change

• Bubbles/fizzes

Tags

NGSS.MS-PS1-4