Thermal Energy Review

People might use a lamp to help them see, but in many cases, the bulb gets quite warm. The two forms of energy being produced by the lamp are -

• light and thermal energy

• light and mechanical energy

• thermal and mechanical energy

• mechanical and electrical energy

Which type of energy conversion occurs when solar panels are used to warm a house?

• kinetic to light to thermal

• light to electrical to thermal

• electrical to thermal to mechanical

• thermal to chemical to light

The illustration shows two objects that have undergone energy transformations. Which of the following is true about the objects?

• Both objects produce a form of thermal energy.

• Both objects have electrical energy present.

• The initial source of energy for one of the object is chemical.

• All of the above.

Which of the following is a primary source of thermal energy in homes?

• A) Solar panels

• B) Geothermal heat pumps

• C) Wind turbines

• D) Hydroelectric dams

What is the main purpose of insulation in buildings?

• A) To increase thermal energy

• B) To reduce thermal energy loss

• C) To generate electricity

• D) To enhance soundproofing

Which of the following is an example of thermal energy transfer by conduction?

• A) Heat from the sun warming your face

• B) A metal spoon getting hot in a pot of boiling water

• C) Warm air rising to the ceiling

• D) Heat from a fireplace warming the room

What is the role of thermal energy in the water cycle?

• A) It causes precipitation

• B) It drives evaporation

• C) It prevents condensation

• D) It stops transpiration

Which of the following appliances primarily uses thermal energy to function?

• A) Refrigerator

• B) Microwave oven

• C) Ceiling fan

• D) Television

How does thermal energy affect the density of air?

• A) Increases density

• B) Decreases density

• C) No effect on density

• D) Changes density randomly

Which of the following is a renewable source of thermal energy?

• A) Natural gas

• B) Coal

• C) Biomass

• D) Nuclear power