Units 7-9 Cumulative Review

________ is the measure of the average kinetic energy of the particles in an object.

• Radiant energy

• Mechanical energy

• Temperature

• Thermal Energy

Which of the following is an insulator?

• Air

• Aluminum

• Copper

• Gold

Which of the following is NOT an example of chemical potential energy?

• Gasoline

• Uranium fuel rods

• Food

• Batteries

Swinging a bat, riding a bike, and running are all examples of ___.

• Chemical Energy

• Thermal energy

• Potential Energy

• Mechanical energy

Which type of heat transfer is shown by the images?

• Radiation

• Convection

• Thermal

• Conduction

How much heat energy is required to raise the temperature of 12g of copper (c =0.385 J/g°C) by 40°C?

• 184.8 J

• 0.0008 J

• 1,246.8 J

• 52.4 J

Which of the following is TRUE about conduction?

• It does not require contact

• It occurs in fluids (liquids and gases)

• It doesn't require matter to transfer

• It occurs in solids

What is the identity of a 10g substance that requires 51,200 J of energy to change its temperature by 40°C?

• Lead (128 J/kg°C)

• Iron (452 J/kg°C)

• Aluminum (900 J/kg°C)

• Silver (235 J/kg°C)

When water boils, the hotter, less dense H₂O molecules move up to the surface and cooler, more dense molecules sink down to the bottom of the pot. What type of heat transfer is this?

• Conduction

• Convection

• Radiation

• Thermal

What makes mechanical waves different from electromagnetic waves?

• Mechanical waves require a medium

• Electromagnetic waves are transverse

• Mechanical waves travel at the speed of light

• Mechanical waves can travel in a vacuum