Ch 29 and 30 Astronomy

Suns Disturbances

Stars Lives

Galaxies and Constellations

Terms to Know

Grab Bag

100 100 100 100 100

200 200 200 200 200

300 300 300 300 300

400 400 400 400 400

500 500 500 500 500

Colored band of light seen near the poles

usually after a solar flare

Answer

Auroras

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Loop of incandescent gas that extends above the

photosphere

Answer

Prominence

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Cooler, darker area of the photosphere with a strong magnetic field

Answer

Sunspot

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Sudden outward eruption of electrically charged

particles

Answer

Solar Flare

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Auroras are usually seen after these…

Answer

Solar Flares

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A star begins as a ________, a cloud of gas and dust

Answer

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Nebula

Who did Ryan Reynolds recently marry? …..Just

kidding.

What color of stars are the hottest?

Answer

Blue

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How many years ago did the Big Bang

occur?

Answer

14 billion years ago

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Pairs of revolving starts held together by gravity

Answer

Binary Stars

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How many years would a star with the suns mass stay on the main sequence?

Answer

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10 billion years

What do scientists use to break sun’s light into a spectrum?

Answer

spectrograph

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What shape of galaxy is the Milky Way?

Answer

Spiral

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Objects in space moving away from an observer will display a ___ shift

Answer

Red

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The idea that all matter and energy was

compressed into a small volume at one time billion of years ago, exploded and

then began to expand is known as the ________

Answer

Big Bang Theory

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The apparent shift in position of an object when

viewed from different locations

Answer

parallax

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Answer

The sun gets its energy from this type of nuclear

reaction

Nuclear Fusion

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Stars, dust and gas bound together by gravity

Answer

Galaxy

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The observed change in the frequency of a wave when either the source or observer is moving is known as

______

Answer

Doppler shift or effect

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The brightness of a star as it appears from Earth is the _____

magnitude

Answer

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Apparent

Answer

The location on the H-R Diagram where most stars lie

Main Sequence

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What can a star’s spectra tell us?

Answer

It’s temperature and composition

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The distance light travels in a year

Answer

Light-year or 9.46 x 1012km

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Ursa Major, Draco, and Pisces are all examples of:

Answer

Constellations

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What are the Northern and Southern Lights?

Answer

Auroras: Aurora Borealis & Aurora

Australis

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How long do sunspot cycles last?

Answer

11 years

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