Chapter 31.1 & 31.2 Flashcards

1
Q

supernova

A

a gigantic explosion in which the temperature within the collapsing star is 10 billion K and the atomic nuclei in the core split into neutrons and protons

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2
Q

neutron star

A

the ball of neutrons left behind after the explosion of a star

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3
Q

constellation

A

a group of stars given a name from ancient culture

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4
Q

radio telescope

A

collects and amplifies radio waves

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5
Q

light-year

A

the distance light travels in one year

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6
Q

spectroscope

A

uses a prism or diffraction grating separate light into its component wavelengths

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7
Q

nebula

A

a large cloud of dust, ice, and gas

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8
Q

main sequence

A

star classification on the H-R diagram.

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9
Q

giant star

A

the evolution of a star caused by the core contracting and the temperature increasing

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10
Q

white dwarf

A

forms as the core of a giant star no longer supports fusion and the star’s outer layer escaping into space

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11
Q

black hole

A

an area so dense that nothing can escape the pull of gravity

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12
Q

photosphere

A

the layer of the sun that emits light into space

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13
Q

sunspots

A

dark cool areas in the photosphere where the Sun’s magnetic field has weakened

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14
Q

How did the constellations get their names?

A

Characters in stories, animals, & tools

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15
Q

What is the constellation name for The Great Hunter?

A

Orion’s Belt

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16
Q

What are the names of Orion’s dogs?

A

Canis Major and Canis Minor

17
Q

What does Canis Major mean?

18
Q

What does Canis Minor mean?

A

Little dog

19
Q

How many basic optical telescopes are there?

20
Q

What does a refracting telescope use?

A

Convex lenses

21
Q

What does a reflecting telescope use?

A

Concave mirror

22
Q

What are the two types of the optical telescopes?

A

Reflecting and Refracting

23
Q

What can a spectroscope determine about a star?

A

The star’s chemical composition, its surface temperature, & whether or not the star is moving closer or further away from the Earth

24
Q

Which wavelengths are blue?

A

The ones closer to earth. (close and frequent)

25
Which wavelengths are red?
The ones further away from the earth (further and less frequent)
26
How are space telescopes more effective than ground telescopes?
The images are not distorted by the atmosphere
27
What are the names of the two space telescopes?
Chandra X-Ray and the Spitzer Space Telescope
28
How fast does light travel in space?
300,000 km/s