Thermal Energy Transfer

Front

What is the original source of most of the energy that people use?

Back

By radiation from the sun.

Front

How does roasting marshmallows happen?

Back

Heat from the fire is radiated into the marshmallow.

Front

Which best describes heat transfer by radiation?

Back

Cooking a hotdog in a microwave.

Front

Why is brick a better choice than metal for building a fireplace?

Back

Brick is heat resistant.

Front

What enables fireman to enter buildings that are on fire and return from them safely?

Back

Fireman wear heat resistant suits.

Front

Why should space be left at the top of the plastic bottle when filling with water and then freeze?

Back

Because water expands when frozen.

Front

What happens when corn kernels are heated in a microwave?

Back

The kernels expand.

Front

Which of the following best describes CONVECTION?

Back

The movement of gas or liquid in which warmer parts move up and the colder parts move down.

Front

What kind of heat transfer is occurring when the sun warms the sand?

Back

Radiation

Front

Which of the following is an example of convection?

• Hair dryer is drying up your hair
• When a car engine turns hot after being turned on.
• A spoon placed in the cup filled with cold coffee.
• Boiling spaghetti noodles in water.

Back

Boiling spaghetti noodles in water.