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A.1.1.7-1.8

Authored by Carolyn Hudson

Biology

12th Grade

A.1.1.7-1.8
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What percentage of Earth's water is in a liquid state?

97.5%

98.3%

99.1%

100%

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary hypothesis for the origin of Earth's water?

Water was present when Earth was formed.

Water was delivered by colliding asteroids.

Water was created by volcanic activity.

Water was formed from atmospheric gases.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the approximate volume of water on Earth in cubic kilometres?

1.2 billion

1.3 billion

1.4 billion

1.5 billion

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is it unlikely that water was present on Earth when the planet was formed?

The planet was too cold.

The planet was too hot.

The planet was too dry.

The planet was too small.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How often do large asteroids (with a diameter greater than 5 km) currently collide with Earth?

Once every 5 million years

Once every 10 million years

Once every 15 million years

Once every 20 million years

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What state of matter is the majority of Earth's water?

Solid

Liquid

Gas

Plasma

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What evidence suggests a heavier bombardment of asteroids in Earth's early history?

Geological formations

Fossil records

Asteroid samples

Ancient texts

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