Unit 2 Earth Science
Flashcard
•
Science
•
9th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the inner core of the Earth?
Back
The inner core is the innermost layer of the Earth, composed primarily of iron and nickel, and is solid due to the immense pressure.
2.
FLASHCARD QUESTION
Front
What are the sources of Earth's internal heat?
Back
Earth's internal heat comes from radioactive decay and residual heat from its formation.
3.
FLASHCARD QUESTION
Front
What is a dependent variable in an experiment?
Back
A dependent variable is the variable that is observed and measured in an experiment, which changes in response to the independent variable.
4.
FLASHCARD QUESTION
Front
What is an independent variable in an experiment?
Back
An independent variable is the variable that is changed or controlled in an experiment to test its effects on the dependent variable.
5.
FLASHCARD QUESTION
Front
What is the asthenosphere?
Back
The asthenosphere is a semi-fluid layer of the Earth's mantle located below the lithosphere, allowing for the movement of tectonic plates.
6.
FLASHCARD QUESTION
Front
What is the lithosphere?
Back
The lithosphere is the rigid outer layer of the Earth, consisting of the crust and the uppermost part of the mantle.
7.
FLASHCARD QUESTION
Front
What is the mantle?
Back
The mantle is the thick layer of the Earth located between the crust and the outer core, composed of silicate rocks that can flow slowly.
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