Earth Formation, System, and Atmosphere

Front

What percentage of solar radiation reaches the Earth's surface?

Back

Approximately 50% of solar radiation reaches the Earth's surface.

Front

When did the Earth first have large amounts of oxygen released into its atmosphere?

Back

Approximately 2 billion years ago.

Front

Which of the following is not a fossil fuel: Oil, Wood, Gas, Coal?

Back

Wood is not a fossil fuel.

Front

What is the ability to do work known as?

Back

Energy.

Front

What is anything that has mass and takes up space known as?

Back

Matter.

Front

What are the four states of matter?

Back

Solid, liquid, gas, and plasma.

Front

What is the primary gas in Earth's atmosphere?

Back

Nitrogen, making up about 78% of the atmosphere.

Front

What is the greenhouse effect?

Back

The greenhouse effect is the warming of Earth’s surface due to the trapping of heat by greenhouse gases in the atmosphere.

Front

What are fossil fuels formed from?

Back

Fossil fuels are formed from the remains of ancient plants and animals over millions of years.

Front

What is the process of photosynthesis?

Back

Photosynthesis is the process by which green plants use sunlight to synthesize foods with the help of chlorophyll.