Earth Science Astronomy

Front

What is a Fission reaction?

Back

A nuclear reaction in which the nucleus of an atom splits into smaller parts, releasing a large amount of energy.

Front

What is a Fusion reaction?

Back

A nuclear reaction in which two light atomic nuclei combine to form a heavier nucleus, releasing energy.

Front

What is gravity?

Back

A force that attracts two bodies towards each other, responsible for the attraction between the Earth and the Moon.

Front

What causes tides on Earth?

Back

Tides are caused primarily by the gravitational pull of the Moon and the Sun on Earth's oceans.

Front

What is a high tide?

Back

A high tide is the point at which the water level reaches its highest point due to the gravitational pull of the Moon.

Front

What is a low tide?

Back

A low tide is the point at which the water level reaches its lowest point, occurring between high tides.

Front

What are gibbous moon phases?

Back

Gibbous phases occur when more than half of the Moon is illuminated but not fully; specifically, the waxing gibbous and waning gibbous.

Front

What is a new moon?

Back

A phase of the Moon when it is not visible from Earth because it is positioned between the Earth and the Sun.

Front

What is a full moon?

Back

A phase of the Moon when it is fully illuminated as seen from Earth, occurring when the Earth is between the Moon and the Sun.

Front

What is a first quarter moon?

Back

A phase of the Moon where half of the Moon is illuminated, occurring about a week after the new moon.