Unit 2 Review/Study Guide

Front

What is an insulator?

Back

An insulator is a material that does not allow heat or electricity to pass through it easily. Examples include rubber, plastic, and glass.

Front

What is the difference between the volume and shape of a liquid?

Back

A liquid has a definite volume, meaning it occupies a specific amount of space, but it has no definite shape, meaning it takes the shape of its container.

Front

What type of heat transfer occurs through waves from the sun to the Earth?

Back

This type of heat transfer is called radiation.

Front

What is convection in terms of heat transfer?

Back

Convection is the type of heat transfer that occurs when warmer areas of a liquid or gas rise and cooler areas sink, creating currents.

Front

How can you best describe heat transfer by radiation?

Back

Heat transfer by radiation can be best described as the transfer of heat through electromagnetic waves, such as a campfire warming your hands.

Front

What are the three main types of heat transfer?

Back

The three main types of heat transfer are conduction, convection, and radiation.

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials, where heat moves from the hotter object to the cooler one.

Front

Can you give an example of conduction?

Back

An example of conduction is a metal spoon getting hot when placed in a pot of boiling water.

Front

What is the role of thermal energy in heat transfer?

Back

Thermal energy is the energy that comes from the temperature of matter. It is transferred from one object to another through conduction, convection, or radiation.

Front

What is the significance of the shape of a solid compared to a liquid?

Back

A solid has a definite shape and volume, while a liquid has a definite volume but takes the shape of its container.