6th Grade Science Test 7 Flashcards

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1
Q

the study of outer space and all that it contains

A

astronomy

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2
Q

dark patches on the sun’s photosphere

A

sunspots

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3
Q

part of the sun visible only during a solar eclipse

A

chromosphere or corona

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4
Q

a high-speed stream of particles that travels outward from holes in the sun’s corona and beats upon the earth’s upper atmosphere

A

solar wind

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5
Q

the three basic types of galaxy shapes

A

spiral
elliptical
irregular

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6
Q

stars that outline a picture in the sky

A

constellation

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7
Q

familiar shape within the constellation Ursa Major which contains the pointer stars

A

Big Dipper

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8
Q

the hottest region of the sun

A

core

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9
Q

streams of gas erupting from the chromosphere and returning in loop like fashion

A

solar prominence

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10
Q

spiral arms attached to a straight “bar” that runs through a galaxy

A

barred spirals

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11
Q

the force that resists motion

A

friction

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12
Q

an area that contains no air

A

vacuum

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13
Q

large clouds of gas and dust floating around in space

A

nebulae

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14
Q

the brightest star in the night sky

A

Sirius

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15
Q

the pole star is known as

A

Polaris

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16
Q

the closest star to the earth

A

the sun

17
Q

the brightest star in the constellation Leo

A

Regulus

18
Q

the brightest star in the installation Perseus

A

Algol

19
Q

the imaginary line that stretches from pole to pole

A

axis of rotation

20
Q

a star system containing millions to billions of stars

A

galaxy

21
Q

the cluster with about 40 galaxies in which we find Earth

A

Local Group

22
Q

distance of the sun from the earth

A

93 million miles

23
Q

the part of the sun’s atmosphere closest to its surface

A

chromosphere

24
Q

the hottest region of the sun’s atmosphere

A

corona

25
Q

a pair of stars that travel together and rotate around each other as the moon does the earth

A

binary star

26
Q

the actual explosion of a star

A

supernova

27
Q

Be able to identify the following constellations.

A
Southern cross
Andromeda
Cassiopeia
Cygnus
Draco
28
Q

Describe what space is like. Include at least 3 things that make space different from Earth and its atmosphere

A

You will need to make complete sentences.

no air (a vacuum)
no air friction
mostly black
unusual activities (weightlessness)
extremes of temperature
29
Q

What is the difference between apparent magnitude and absolute magnitude?

A

Apparent magnitude is the measurement used to describe the brightness of a star as it appears from Earth. The actual brightness of a star is called its absolute magnitude.