Unit 7 Chapter 9 Flashcard

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English
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4th Grade
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1.
FLASHCARD
Front
How do hydrothermal vents form?
Back
Cold seawater sinks through cracks, heats near magma, and returns as hot water.
2.
FLASHCARD
Front
What type of animals might live near hydrothermal vents?
Back
Pale shrimp, giant tube worms, and white crabs.
3.
FLASHCARD
Front
What is the Mid-Atlantic Ridge?
Back
A long, underwater mountain range where tectonic plates are moving apart.
4.
FLASHCARD
Front
Why does the water coming out of hydrothermal vents look like smoke?
Back
Minerals in the hot water form tiny particles when they meet cold seawater.
5.
FLASHCARD
Front
What did scientists learn about seafloor spreading from the Mid-Atlantic Ridge?
Back
Continents are pushed farther apart as the seafloor spreads.
6.
FLASHCARD
Front
What is a hydrothermal vent?
Back
An opening in the sea floor that emits hot, mineral-rich water.
7.
FLASHCARD
Front
What role do hydrothermal vents play in ocean ecosystems?
Back
They provide nutrients and energy for unique organisms that thrive in extreme conditions.
8.
FLASHCARD
Front
What is seafloor spreading?
Back
The process by which new oceanic crust is created at mid-ocean ridges.
9.
FLASHCARD
Front
What are tectonic plates?
Back
Large sections of the Earth's crust that move and interact with each other.
10.
FLASHCARD
Front
What is magma?
Back
Molten rock located beneath the Earth's surface.
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