BHP Unit Four Review

Question 1

As you learned from Threshold 3, the Universe was much more chemically complex because of...

Accepted Answer

aging and dying stars.

Question 2

The Earth’s crust is broken up into plates, which float upon the slowly moving rock of the ___.

Accepted Answer

mantle

Question 3

When out to study in the field, a geologist would most likely bring a ___________ with her.

Accepted Answer

rock hammer

Question 4

90% of the Earth is composed of heavier elements that were created in ___________________.

Accepted Answer

a supernova

Question 5

When did the Earth form?

Accepted Answer

4.5 billion years ago

Question 6

Geology is the study of...

Accepted Answer

the Earth, including its composition and history.

Question 7

The Earth in its infancy, 4.5 billion years ago, was a hospitable place for life.

Accepted Answer

False

Question 8

Why did the dust, other materials orbiting the early Sun begin to stick together (accrete)?

Accepted Answer

Gravity and electrostatic forces

Question 9

As the early Earth formed, the lightest elements rose to form its ________________.

Accepted Answer

Atmosphere

Question 10

As the early Earth formed, the heaviest elements sank, forming the Earth’s _________________

Accepted Answer

Core

Question 11

Today, about 98% of the atomic matter in the Universe consists of the elements...

Accepted Answer

hydrogen and helium

Question 12

The formation of our Solar System, including Earth, marks the ____ threshold in Big History.

Accepted Answer

Fourth

Question 13

Which of the following would NOT be evidence for Alfred Wegener’s theory of continental drift?

Accepted Answer

The height of Mt. Everest

Question 14

Pluto is the outermost planet in our solar system.

Accepted Answer

False

Question 15

___________________ is a planet outside of our Solar System.

Accepted Answer

An exoplanet

Question 16

Which of the following is NOT one of the reasons the early Earth was so hot?

Accepted Answer

It was much closer to the Sun during the Archaean Eon

Questions 16