sections 1&2 Flashcards

1
Q

constellations

A

many of the names given to these groups of starts by ancient cultures remain today

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2
Q

radio telescope

A

collects and amplifies radio waves

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3
Q

light-year

A

distance light travels in one year

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4
Q

spectroscopes

A

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

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5
Q

nebula

A

stars form from a large cloud of gas, ice, and dust

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6
Q

main sequence

A

stars include the broad band of starts from the hot, bright stars in the upper left corner of the diagram to the cool, dim stars in the lower right corner

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7
Q

giant star

A

as equilibrium ends, the star’s core contracts, the temperature increases

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8
Q

white dwarf

A

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

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9
Q

black hole

A

and area in space that is so dense that nothing can escape its pull of gravity

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10
Q

photo-sphere

A

the layer of the sun that emits light into space

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11
Q

sunspots

A

dark, cool areas in the photo-sphere where the sun’s magnetic field has weekend

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12
Q

supernova

A

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

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13
Q

neutron star

A

star explodes it leaves behind a ball of neutrons

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14
Q

how did some of the constellations get their name

A

stories, animals, and tools

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15
Q

what is the constellation named after a great hunter

A

O Ryan’s belt

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16
Q

what are the two dogs from O Ryan’s belt and what do they mean

A

Cains Minor- small dog

Cains Major- big dog

17
Q

how many basic types optical telescope is there

A

two

18
Q

what is a refracting telescope

A

it convex lens- curved on the out side

19
Q

what is a reflecting telescope

A

its concave mirror- curved on the inside

20
Q

why are are space telescope better the any on land

A

there is no clouds or anything blocking the view

21
Q

what are the two name of the space telescopes

A

Chandra X-Ray Observatory and Spitzer Space Telescope

22
Q

what are the three things that spectroscope determine about stars

A

chemical composition, its surface temperature, and whether it is moving away from or toward Earth

23
Q

what dose a red wave length look like

A

it is more spread out cause the star is further way from Earth

24
Q

what dose a blue wave length look like

A

it is more together cause the star is closer to Earth

25
Q

where do stars form from

A

a nebula

26
Q

where dose the H-R in H-R Diagram stand for

A

that is the initial of two peoples name Hertzsprung-Russel

27
Q

what is our sun known as

A

a giant star

28
Q

what are the interior layers of the sun

A

core
radiation zone
convection zone

29
Q

what are the exterior layers of the sun

A

photo-sphere

corona

30
Q

are sun spot permanent feature

A

false