31.1-31.2 Flashcards

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1
Q

A group of stars that form a pattern to resemble something.

A

Constellations

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2
Q

What collects and amplifies radio waves?

A

Radio Telescope

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3
Q

What is the distance light travels in one year called?

A

A light-year

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4
Q

What separates light into its component wavelengths?

A

A Spectroscope

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5
Q

What is a star formed from a large cloud of gas, ice, and dust called?

A

Nebula

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6
Q

What includes the hot stars from the upper left corner to the cooler stars to the lower right corner?

A

Main sequence

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7
Q

What is it called as the star´s core contracts, the temperature increases and the star evolves.

A

Giant Star

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8
Q

What forms as the core of a giant star no longer supports fusion and the star´s outer layers escape into space?

A

White dwarf

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9
Q

What is an area in space that is so dense that nothing can escape its pull of gravity?

A

Black hole

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10
Q

What is the layer of the sun that emits light into space called.

A

Photosphere

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11
Q

What are dark, cool areas in the photosphere where the sun´s magnetic fields has weakend called?

A

Sunspots

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12
Q

What is a giant explosion in which the collapsing star is 10 billion K and the atomic nuclei in the core split into neutrons and protons called?

A

Supernova

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13
Q

What is the ball of neutrons that are formed when a star explodes called?

A

Neutron Star

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14
Q

How did the constellations get their names?

A

Characters from stories, animals, and tools

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15
Q

What is the constellations name of the Great Hunter?

A

Orion´s Belt

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16
Q

What are the constellations name of Orion´s dogs?

A

Canis major and Canis minor

17
Q

How many basic optical telescopes are there?

A

2

18
Q

What does a refracting telescopes use?

A

Lenses

19
Q

What does reflecting telescopes use?

A

Mirrors

20
Q

How are space telescopes more effective than ground telescopes?

A

The images is not distorted.

21
Q

What are the space based telescopes called?

A

Chandra X-Ray Observatory and Spitzer Space Telescope

22
Q

How fast does light travel in space?

A

300,000 km per second

23
Q

What can a spectroscope determine about a star?

A

It can detect a stars composition, surface temperature, and whether it is moving closer or further from
Earth.

24
Q

What color of rays are more frequent?

A

Blue color rays

25
Q

What color of rays are less frequent?

A

Red color rays

26
Q

Where does stars form from?

A

A Nebula

27
Q

What does the H and the R stand for in the H-R diagram?

A

The last names of Einjar Hertzsprung and Henry Russel

28
Q

What is our sun also called?

A

A Giant Star

29
Q

What are the interior layers of the Sun?

A

the core, radiation zone, and convection zone

30
Q

What is the atmosphere of the Sun composed of?

A

Chromosphere and corona

31
Q

Are sunspots hotter or cooler than the surrounding areas?

A

Cooler

32
Q

Are sunspots permanent?

A

No