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Science > Gr.6 Ch. 4.1-4.4 > Flashcards

Gr.6 Ch. 4.1-4.4 Flashcards

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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

A

The sun

16
Q

The brightest star in the constellation Leo

A

Regulus

17
Q

The brightest star in the constellation Perseus

A

Algol

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

A

A galaxy

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
Q

A pair of stars that travel together and rotate around each other as the moon does the Earth

A

A binary star

25
Q

The actual explosion of a star

A

Supernova

26
Q

Identify the following constellations

A

Southern Cross, Andromeda, Cassiopeia, Orion, The Great Bear, Sagittarius the archer Leo the lion, Gemini

27
Q

Name elements of space that are different from Earth and its atmosphere

A 
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
Q

What is the difference between apparent magnitude and absolute magnitude?

A

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.

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