earth in space Flashcards

1
Q

galaxy in which we live

A

milky way

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2
Q

sun and the group of bodies that revolve around it

A

solar system

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3
Q

major bodies that orbit a star

A

planets

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4
Q

body whose great size attracts others through gravity

A

sun

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5
Q

small outer planet that has a rocky core

A

pluto

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6
Q

third planet from the sun and the fifth largest of all of the planets

A

earth

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7
Q

type of energy that reaches the sun as light and heat

A

solar energy

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8
Q

one complete spin of earth on its axis that takes 24 hours

A

rotation

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9
Q

A ____ is a group of different parts that interact to form a whole.

A

system

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10
Q

Geographers divide the earth into _____ major parts called spheres.

A

four

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11
Q

The envelope of gasses that surrounds the earth is _______.

A

atmosphere

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12
Q

The ______ is the solid crust of earth, which includes land and soil.

A

lithosphere

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13
Q

The hydrosphere, earths water, covers approximately ________ percent of earths surface.

A

70

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14
Q

Much of earths water in the form of ice is locked in ______ in the polar regions.

A

glaciers

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15
Q

The ______ is the part of the earth system that contains all life, including both plants, and animals.

A

biosphere

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16
Q

The part of the earth system that protects earth from the suns harmful radiation is the ______.

A

atmosphere

17
Q

Earths four spheres make up the ______ which includes biological chemical, and physical conditions that interact with, and affect life.

A

environment

18
Q

Individuals and groups sometimes try to influence governmental decisions on environmental issues, a practice called _______.

A

lobbying

19
Q

Extends from deep ocean floor to high in the atmosphere

A

biosphere