Unit 4 Test: Earth's Early History 2024

Front

Which of the following has the least amount of visible craters? Earth, The Moon, Mercury, Jupiter

Back

Earth

Front

The circular shape of craters is due to...

Back

material flying out in all directions as a result of the explosion upon meteorite impact.

Front

Currently, no known asteroids are predicted to ______ with our world.

Back

Collide

Front

What is the main reason older surfaces have more impact craters?

Back

They have been exposed to impacting bodies for a longer period.

Front

What makes impact craters on Earth harder to recognize?

Back

Weathering and erosion

Front

Why does the Moon have more craters than the Earth?

Back

The Earth’s atmosphere protects it from impacts.

Front

What is the main reason scientists have difficulty determining the exact age of the Earth?

Back

Recycling of Earth's oldest rocks

Front

The amount of time it takes a quantity of unstable atoms to decrease to one-half the original level is called ________.

Back

halflife

Front

Atoms with significantly more neutrons than protons are considered ____.

Back

Unstable

Front

Radiometric dating of lunar rocks shows that the Solar System formed between ________.

Back

4.53 and 4.58 billion years ago