Unit 4 Test: Earth's Early History 2024

Front

What role do plants play in Earth's atmosphere?

Back

They release oxygen.

Front

Which planet has the least amount of visible craters?

Back

Earth.

Front

What process breaks apart ammonia molecules in the atmosphere?

Back

Sunlight.

Front

What makes impact craters on Earth harder to recognize?

Back

Weathering and erosion.

Front

What is the concept of half-lives in radiometric dating?

Back

Half-lives refer to the time required for half of a radioactive substance to decay.

Front

What gas do plants absorb during photosynthesis?

Back

Carbon dioxide.

Front

What is the primary reason Earth has fewer craters than the Moon?

Back

Weathering and erosion processes on Earth.

Front

What is the significance of craters in understanding planetary history?

Back

Craters provide evidence of past impacts and geological activity.

Front

How does sunlight affect ammonia in the atmosphere?

Back

Sunlight breaks apart ammonia molecules through photodissociation.

Front

What is the difference between a meteor and a meteorite?

Back

A meteor is a meteoroid that burns up in the atmosphere, while a meteorite is a meteoroid that reaches the Earth's surface.