Temperature, Thermal Energy, and Heat

Thermal energy ALWAYS moves from _____ to _____.

• solid to liquid
• ice to water
• hot to cold
• solid to gas

Tags

NGSS.MS-PS3-3

A pot of 2400g of water at a temperature of 25˚C is heated on a stove until the water boils (100˚C).  The specific heat of water is 4.18 J/(g˚C).
Determine the heat energy needed to heat the water in the pot to boiling.

• 133.76J
• 43,062.2J
• 752,400J
• 1,003,200J

Tags

NGSS.MS-PS3-4

NGSS.MS-PS1-4

Water has a specific heat of 4.184 J/gºC.

Wood has a specific heat of 1.760 J/gºC.

Aluminium has a specific heat of 0.903J/gºC.

Glass has a specific heat of 0.75 J/gºC.

A student was given 2 g of each sample, he was asked to heat each sample for 10 seconds. Which sample experienced the highest change in its temperature?

• Wood

• Water

• Aluminum

• Glass

Heat is a measure of the average kinetic energy of all the particles in an object.

• True

• False

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

A hot object has more thermal energy than a similar cold object only because of greater kinetic energy.

• True

• False

When the same amount of thermal energy is added to both an object with high specific heat and an object with low specific heat, the object with a high specific heat will increase in temperature more than the object with a low specific heat.

• True

• False

The amount of thermal energy transferred between objects depends only on their masses and initial and final temperatures.

• True

• False

Tags

NGSS.HS-PS3-4

Heat is thermal energy transferred from one object to another because of a difference in ____.

• mass

• temperature

• volume

• potential energy

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-3

A block of copper (specific heat = 385 J/kg·K) requires 635,000 J of thermal energy to change in temperature from 17.0°C to 139.0°C. What is the mass of this copper block?

• 13.5 kg

• 11.9 kg

• 5.68 kg

• 4.00 kg

Tags

NGSS.HS-PS3-1

Water makes a good coolant because it has a ____.

• high specific heat

• high boiling point

• low specific heat

• low freezing point