Science 6th Flashcards

1
Q

Big Bang Theory

A

The Big bang theory was a tremendous explosion on earth.

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2
Q

Irregular galaxy

A

Galaxies that don’t fit into any other class.

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3
Q

Spiral galaxy

A

galaxy that have a bulge at the center and spiral arms.

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4
Q

universe

A

the earth and space and everything in space

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5
Q

nebula

A

a large cloud of gas and dust in interstellar space.

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6
Q

pulsar

A

a rapidly spinning neutron start that emits rapid pulses of radio and optical energy.

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7
Q

quasar

A

a very luminous star like object that generates energy at a high rate,

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8
Q

supernova

A

a gigantic explosion in which a massive star collapses and throws it’s outer layers into space.

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9
Q

constillation

A

a region of the sky that contains a recognizable star pattern and that is used to describe the location of objects in space.

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10
Q

milky way

A

it includes everything in space.

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11
Q

astronomy

A

the study of the universe.

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12
Q

year

A

the time it takes for the earth to orbit around the sun

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13
Q

month

A

a division of the year that is based on the orbit of the moon around the earth.

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14
Q

day

A

the time required for earth to rotate once on it’s axis.

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15
Q

refracting telescope

A

a telescope that uses a set of lenses to gather and focus light from distant objects.

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16
Q

reflecting telescope

A

a telescope that uses a curved mirror to gather and focus light from distant objects,

17
Q

telescope

A

an instrument that collects electromagnetic radiation from the sky and concentrates it for better observation.

18
Q

electromagnetic spectrum

A

all of the frequencies or wavelengths of electromagnetic radiation.

19
Q

zenith

A

the point in the sky directly above a observer on earth.

20
Q

altitude

A

the angle between and object in the sky and the horizon.