Gr.6 Ch. 4.1-4.4 Flashcards

0
Q

Dark patches on the Sun’s photosphere

A

Sunspots

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1
Q

The study of outerspace and all it contains

A

Astronomy

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2
Q

Part of the sun visible only during a solar eclipse

A

Chromosphere or Corona

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3
Q

High speed stream of particles that travels outward from hole in the sun’s Corona and beats upon the earth’s upper atmosphere

A

Solar wind

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4
Q

The three basic types of galaxies shapes

A

Spiral, elliptical, and irregular

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5
Q

Stars that outline a picture in the sky

A

Constellation

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6
Q

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

A

Big Dipper

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7
Q

The hottest region of the sun

A

The core

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8
Q

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

A

Solar prominence

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9
Q

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

A

Barred spirals

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10
Q

The force that resists motion

A

Friction

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11
Q

An area that contains no air

A

Vacuum

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12
Q

Large clouds of gas and dust floating around in space

A

Nebulae

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13
Q

The brightest star in the night sky

A

Sirius

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14
Q

The polestar is known as this

A

Polaris

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15
Q

The closest star to earth

16
Q

The brightest star in the constellation Leo

17
Q

The brightest star in the constellation Perseus

18
Q

This is the imaginary line that stretches from pole to pole

A

The Earth’s axis of rotation

19
Q

A star system containing millions to billions of stars

20
Q

The cluster with about 40 galaxies in which we find earth

A

Local Group

21
Q

The sun is located this far away from earth

A

93,000,000 miles

22
Q

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

A

The chromosphere

23
Q

The hottest region of the sun’s atmosphere

A

The chromosphere

24
A pair of stars that travel together and rotate around each other as the moon does the Earth
A binary star
25
The actual explosion of a star
Supernova
26
Identify the following constellations
Southern Cross, Andromeda, Cassiopeia, Orion, The Great Bear, Sagittarius the archer Leo the lion, Gemini
27
Name elements of space that are different from Earth and its atmosphere
``` No air so there is a vacuum, no air so there is no friction, it is mostly black, things are weightless, there are extreme temperatures ```
28
What is the difference between apparent magnitude and absolute magnitude?
The actual brightness of a star is called its absolute magnitude based on how much light the star actually produces. Apparent magnitude is the measurement used to describe the brightness of a star as it appears from Earth. It depends on how bright it is (actual brightness) as well as its distance from Earth.