Space Science Semester 1 Review

Front

What occurs during nuclear fusion in the sun?

Back

Hydrogen nuclei combine to produce a helium nucleus.

Front

What is released when hydrogen nuclei fuse into helium nuclei?

Back

Energy is released.

Front

What is the force of gravity also known as?

Back

Weight.

Front

What is one astronomical unit (1 AU)?

Back

The average distance from the sun to Earth.

Front

What two gases compose 99% of Earth's atmosphere?

Back

Nitrogen and oxygen.

Front

What is nuclear fusion?

Back

A process where two light atomic nuclei combine to form a heavier nucleus, releasing energy.

Front

What is the primary source of energy for the sun?

Back

Nuclear fusion.

Front

What is the significance of the solar eclipse?

Back

It occurs when the moon passes between the Earth and the sun, blocking the sun's light.

Front

What is the role of gravity in space?

Back

It is the force that attracts two bodies towards each other, keeping planets in orbit around stars.

Front

What is the composition of the sun?

Back

Primarily hydrogen and helium.