Unit 4: Thermal Energy Review

What is heat?

• The color of an object when it gets hot

• The transfer of thermal energy from one object to another because of a temperature difference

• The sound made by an object when it is heated

• The light emitted by an object when it is cold

How does heat flow?

• From cold objects to hot objects

• Randomly from one object to another

• From hot objects to cold objects

• Only in a vacuum

Temperature is a measure of how hot or cold an object is compared to what?

• A) A specific temperature scale

• B) The object's color

• C) A reference point

• D) The object's size

What is temperature related to in terms of the particles in an object?

• A) The color of the particles

• B) The average kinetic energy due to their random motion

• C) The number of particles

• D) The shape of the particles

How many main temperature scales are used in science according to the image?

• 2

• 3

• 4

• 5

According to the image, what is the temperature labeled as 'absolute zero' in Kelvin?

• 0 K

• 273 K

• -273 °C

• -459 °F

Which temperature scale has the boiling point of water at 212 degrees as per the image?

• Fahrenheit

• Celsius

• Kelvin

• None of the above

What is the first step in converting a temperature from degrees Celsius (°C) to degrees Fahrenheit (°F)?

• Divide °C by 5

• Add 32 to °C

• Multiply °C by 9

• Subtract 32 from °C

After multiplying the temperature in degrees Celsius (°C) by 9, what is the next step in the conversion to degrees Fahrenheit (°F)?

• Add 32

• Multiply by 5

• Divide by 5

• Subtract 32

What is the final step in converting a temperature from degrees Celsius (°C) to degrees Fahrenheit (°F)?

• Multiply by 5

• Divide by 9

• Subtract 32

• Add 32