Unit 7 Chapter 9 Flashcard

Unit 7 Chapter 9 Flashcard

Assessment

Flashcard

English

4th Grade

Easy

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15 questions

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1.

FLASHCARD QUESTION

Front

How do hydrothermal vents form?

Back

Cold seawater sinks through cracks, heats near magma, and returns as hot water.

2.

FLASHCARD QUESTION

Front

What type of animals might live near hydrothermal vents?

Back

Pale shrimp, giant tube worms, and white crabs.

3.

FLASHCARD QUESTION

Front

What is the Mid-Atlantic Ridge?

Back

A long, underwater mountain range where tectonic plates are moving apart.

4.

FLASHCARD QUESTION

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 QUESTION

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 QUESTION

Front

What is a hydrothermal vent?

Back

An opening in the sea floor that emits hot, mineral-rich water.

7.

FLASHCARD QUESTION

Front

What role do hydrothermal vents play in ocean ecosystems?

Back

They provide nutrients and energy for unique organisms that thrive in extreme conditions.

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