

Earth Science Flashcard
Flashcard
•
Science
•
12th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What process leads to the formation of volcanic islands like the Mariana Islands?
Back
Melting of oceanic crust at subduction zones.
2.
FLASHCARD QUESTION
Front
What event occurs due to the sudden release of energy caused by tectonic motion?
Back
Earthquake.
3.
FLASHCARD QUESTION
Front
How does radioactive decay contribute to motion within the Earth?
Back
The density of molten rock decreases as it is heated, pushing the rock above by material with greater density.
4.
FLASHCARD QUESTION
Front
What seismic wave phenomenon helps scientists interpret the Earth's interior structure?
Back
Refraction of waves.
5.
FLASHCARD QUESTION
Front
If the Atlantic Ocean is currently 5,000 km wide and widens at a rate of 2.5 cm per year, how wide will it be in 100 million years?
Back
7,500 km.
6.
FLASHCARD QUESTION
Front
What are tectonic plates?
Back
Large sections of the Earth's lithosphere that move and interact at their boundaries.
7.
FLASHCARD QUESTION
Front
What is subduction?
Back
The process where one tectonic plate moves under another and sinks into the mantle.
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