General Science Flashcards

1
Q

The innermost layer of Earth is?

A

An iron core.

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2
Q

When did the Earth form?

A

4.6 billion years ago.

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3
Q

The lithosphere is?

A

Relatively light and uppermost.

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4
Q

Mountains are parts of Earth’s?

A

Crust

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5
Q

Which of the following is the primary driving force behind ocean tides?

A

The moon

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6
Q

The Earth’s mantle?

A

Is between the crust and the core.

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7
Q

Most of the rock at Earth’s surface is?

A

Sedimentary.

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8
Q

Slate is a dark, metamorphic rock whose sedimentary precursor was?

A

Shale.

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9
Q

How long does it take the global atmosphere to circulate?

A

One year.

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10
Q

What ultimately drives the circulation of the atmosphere and ocean?

A

The Sun

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11
Q

The timescale for the entire ocean to mix is about?

A

One thousand years.

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12
Q

Why do oceans have waves, but small ponds do not?

A

The surface area of a pond is not large enough for wind to create waves.

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13
Q

Soil is thickest, generally, where?

A

climate is coldest.

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14
Q

Which of the following is true in biological classification?

A

Genus has many species.

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15
Q

What is an invasive species?

A

A nonnative species that is introduced from elsewhere and spreads.

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16
Q

What you eat, you take in “embodied energy” What exactly has become embodied?

A

Sunlight.

17
Q

The functional role that bacteria play in the recycling of elements in the ocean is the equivalent to the role played on land by?

A

Soil bacteria

18
Q

which is not larger than a community?

A

Population

19
Q

The limit to a population of a species in a community determined by environmental conditions or species interactions, is called the?

A

Carrying capacity.