How the earth Was Made--From Molten Rock to Green Planet

How the earth Was Made--From Molten Rock to Green Planet

Assessment

Flashcard

English

7th Grade

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

Student preview

quiz-placeholder

15 questions

Show all answers

1.

FLASHCARD QUESTION

Front

What was the temperature of Earth's surface during its early formation?

Back

8,000 degrees Fahrenheit.

2.

FLASHCARD QUESTION

Front

How long did Kelvin estimate it would take for the molten Earth to cool to its present temperatures?

Back

20 million years.

3.

FLASHCARD QUESTION

Front

What did Lord Kelvin believe about the Earth's temperature over time?

Back

It was slowly cooling down.

4.

FLASHCARD QUESTION

Front

What is the relationship between the density of oceanic crust and continental crust?

Back

Oceanic crust is denser and heavier.

5.

FLASHCARD QUESTION

Front

Where is geologist Gary Stevens climbing on some of the oldest continental rock?

Back

South Africa.

6.

FLASHCARD QUESTION

Front

What is the primary composition of the Earth's crust?

Back

The Earth's crust is primarily composed of rocks and minerals.

7.

FLASHCARD QUESTION

Front

What is the process called when molten rock cools and solidifies?

Back

Crystallization.

Create a free account and access millions of resources

Create resources

Host any resource

Get auto-graded reports

Google

Continue with Google

Email

Continue with Email

Classlink

Continue with Classlink

Clever

Continue with Clever

or continue with

Microsoft

Microsoft

Apple

Apple

Others

Others

Already have an account?