Benchmark Review

Front

What is the atmosphere?

Back

The atmosphere is a layer of gases surrounding the Earth, essential for life, and composed mainly of nitrogen and oxygen.

Front

What are greenhouse gases?

Back

Greenhouse gases are gases in the atmosphere that trap heat, such as carbon dioxide and methane, contributing to the greenhouse effect.

Front

What is the main component of the atmosphere?

Back

The main component of the atmosphere is nitrogen, which makes up about 78% of the air we breathe.

Front

What does an anemometer measure?

Back

An anemometer measures wind speed.

Front

What is a lever?

Back

A lever is a simple machine that consists of a rigid bar that pivots around a point called the fulcrum.

Front

What are the layers of the atmosphere?

Back

The layers of the atmosphere include the troposphere, stratosphere, mesosphere, thermosphere, and exosphere.

Front

What is the purpose of the ozone layer?

Back

The ozone layer protects the Earth from harmful ultraviolet (UV) radiation from the sun.

Front

What is energy transformation?

Back

Energy transformation is the process of changing energy from one form to another, such as chemical energy to electrical energy.

Front

What is a circuit?

Back

A circuit is a closed loop that allows electricity to flow, consisting of a power source, conductors, and a load.

Front

What is volcanic ash?

Back

Volcanic ash is tiny particles of rock and glass created during a volcanic eruption, which can affect the atmosphere.