Earth Origin & Age of Earth Review

Earth Origin & Age of Earth Review

9th Grade

17 Qs

quiz-placeholder

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Earth Origin & Age of Earth Review

Earth Origin & Age of Earth Review

Assessment

Quiz

Social Studies

9th Grade

Practice Problem

Medium

Created by

Cris DeWolf

Used 412+ times

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17 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Earth, and the rest of the solar system, formed from a giant cloud of gas and dust in space called a __.

protosun

nebula

galaxy

comet

Answer explanation

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

As the cloud collapsed, it begin to spin. This spinning caused it to flatten, forming a ___.

protosun

protoplanetary disk

planetesimal

nebula

Answer explanation

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

As the solar system continued to evolve, material in the disk collided with other material and grew into planetesimals, then protoplanets, and then planets. This process of growth by collision created a lot of heat, melting the early Earth. Growth by collision is called ___.

differentiation

accretion

adsorption

kinetic molecular theory

Answer explanation

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Since the early Earth was molten, the most dense material sank to the center forming the core. Less dense material rose towards the surface, forming the crust. This process is known as ___.

differentiation

accretion

adsorption

kinetic molecular theory

Answer explanation

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the name for the scientific explanation for the origin of stars and planets?

The accretion hypothesis

The nebular hypothesis

The gravitational collapse hypothesis

The protoplanetary hypothesis

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What did students from our school (as part of a collaborative team of students from several school) use the Spitzer Space Telescope to look for signs of star formation in?

The Orion Nebula

The Milky Way

a dark nebula (LDN 981)

Andromeda

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How old is Earth?

4.6 thousand years

4.6 million years

4.6 billion years

4.6 trillion years

Answer explanation

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