Chapter 31.1 & 31.2 Flashcards

1
Q

Constellations

A

Groups of stars that form a picture

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2
Q

Radio Telescope

A

Collects and amplifies radio waves

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3
Q

Light-year

A

The distance light travels in one year

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4
Q

Spectroscope

A

Uses a prism or diffraction grating to separate light into it’s component wavelengths

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5
Q

Nebula

A

Large cloud of gas, ice and dust

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6
Q

Main Sequence Stars

A

Includes the broad band of stars from the hot, bright stars, to the dim, cool stars

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7
Q

Giant Star

A

Created when a stars core contracts, the temp increases

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8
Q

White Dwarf

A

Forms as the core of a giant star no longer supports fusion and the star’s outer layers escape into space, leaving a hot and dense core

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9
Q

Supernova

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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10
Q

Neutron

A

The ball that is left behind after a supernova (full of neutrons

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11
Q

Black Hole

A

An area in space that is so dense that nothing can escape it’s 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 do people name constellations?

A

Characters in stories, animals, tools

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15
Q

What constellation represents the great hunter?

A

Orion

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16
Q

What are the two hunting dog constellations?

A

Canis Major, Canis Minor

17
Q

What does Canis Major mean?

18
Q

What does Canis Minor mean?

A

Little dog

19
Q

How many optical telescopes are there?

20
Q

What kind of lens does a refracting telescope use?

A

Convex lenses

21
Q

What kind of lens does a reflecting telescope use?

A

A mirror, and concave lens

22
Q

Why are space telescopes better than ground based telescopes?

A

Not many distortions, obstacles, disruptions in images

23
Q

What are the two names of the telescopes?

A

Chandra X-Ray, Spritzer Space Telescope

24
Q

Stars that are closer to Earth appear what color, as well as what are it’s wavelengths like?

A

Blue, close together

25
Stars that are father away from Earth appear what color, as well as what are it's wavelengths like?
Red, spread apart
26
What are the three things that a spectroscope can determine about a star?
Chemical composition, surface temp, and whether it's moving closer to or father away from Earth.
27
What forms stars?
A nebula
28
What forms in the center of the cloud of a Nebula?
Protostar
29
What do the H and R stand for in the H-R Diagram?
Hertzsprung and Russell
30
What is our Sun also called?
Giant Star
31
What are the different layers of the sun?
The core, the radiation zone, and the convection zone
32
What is the atmosphere of the sun composed of?
Chromosphere and corona
33
Are sunspots hotter or cooler than the surrounding areas?
Cooler
34
Are sunspots permanent features of the Sun?
No