Energy Theorem and Thermal Energy

In the formula, which quantity represents the specific heat?

• c

• m

• Q

• deltaT

Tags

NGSS.MS-PS1-4

The specific heat of copper is 0.385 J/g·°C. Which equation would you use to calculate the amount of heat needed to raise the temperature of 0.75 g of copper from 7°C to 29°C?

• Q = 0.385 J/g·°C x (29°C – 7°C)

• Q = 0.75 g x 0.385 J/g·°C x 29°C

• Q = 0.75 g x 0.385 J/g·°C x 22°C

• Q = 0.75 g x 0.385 J/g·°C x 7°C

Tags

NGSS.HS-PS3-4

What property of an object is related to the average kinetic energy of the particles in that object?

• conductivity

• temperature

• specific heat

• mass

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

As the temperature of an object rises, so does the

• speed of the object.

• mass of the object.

• potential energy of the object.

• thermal energy of the object.

Tags

NGSS.MS-PS3-4

Which of the following is a unit of temperature?

• Celsius degree

• joule

• kilogram

• calorie

Heat is the transfer of thermal energy from one object to another because of a difference in

• specific heat

• temperature

• phase

• waste heat

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

How do you know if a system is considered "closed"?

• If thermal energy is not transferred to the environment

• If temperature is conserved

• If the masses of the sample and water are equal

• If work is done on the test sample

Tags

NGSS.HS-PS3-4

Which of the following is the best conductor of heat?

• glass

• metal

• plastic

• wood

Tags

NGSS.MS-PS3-3

Thermal energy only naturally flows...

• from warmer objects to colder objects

• from a system of higher mass to a system of lower mass

• between two systems of the same temperature

• when objects are not in thermal contact

Tags

NGSS.MS-PS3-3

What factors determine the thermal energy in a substance?

• the KE of the molecules and the number of molecules

• the mass of the substance only

• the temperature of a substance only

• the temperature of a substance and its specific heat capacity

Tags

NGSS.MS-PS3-4