Earth's Water Flashcards

1
Q

What is the hydrosphere?

A

All the water on, beneath, or above Earth

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2
Q

How is water on Earth distributed?

A

From clouds onto Earth or other bodies of water

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3
Q

Explain the greenhouse effect.

A

The greenhouse effect is the warming of the Earth

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4
Q

What would Earth be like without the greenhouse effect?

A

The Earth would be very cold

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5
Q

What is specific heat?

A

The amount of thermal energy needed to raise the temperature of a material by 1°C

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6
Q

Is the specific heat of water high or low?

A

High

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7
Q

How does water regulate climate?

A

The amount of water vapor in air can change the humidity

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8
Q

In what direction does thermal energy move?

A

From warm to cool

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9
Q

What is the water cycle?

A

The process in which water moves through the hydrosphere.

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10
Q

What “drives” the water cycle?

A

The sun and gravity

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11
Q

Why is water called a universal solvent?

A

Because many materials dissolve in it including some minerals

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12
Q

What is unusual about water’s density?

A

It is greater in liquid form than solid form

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13
Q

What is the water quality?

A

The chemical, biological, and physical status of a body of water

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14
Q

How do humans affect water quality?

A

With pollution from factories

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15
Q

What is the difference between point-source and non-point source pollution?

A

Point Source- When you can trace pollution back to a certain spot.
Non-Point Source- When you cannot trace pollution back to a certain spot.

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16
Q

What are the five different tests of water quality?

A

Dissolved oxygen, water temperature, nitrates, acidity, and turbidity

17
Q

How to nitrates enter water?

A

From fertilizer run-off

18
Q

What is turbidity?

A

A measure of the cloudiness of water from sediments, microscopic organisms or pollutants.

19
Q

How are bio-indicators used?

A

They alert scientists to changes in the level of oxygen, nutrients or pollutants in water.

20
Q

What is remote sensing?

A

The collection of data from a distance