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Astronomy > Mid Term Exam - 2016 > Flashcards

Mid Term Exam - 2016 Flashcards

0
Q

What is the giant collection or cloud of space dust?

A

Nebula

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1
Q

What is the part of the atom that orbits the nucleus?

A

Electron

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2
Q

Where are most asteroids located?

A

Asteroid Belt

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3
Q

What is the distance between two peaks of waves?

A

Wavelengths

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4
Q

What is produced when visible light passes through a cloud of gas?

A

Absorption line spectrum

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5
Q

What is the process for how our solar system is formed from a cloud of gas and dust?

A

Accretion

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6
Q

What is the range of light waves that expand from the wavelength of radio waves to gamma rays?

A

Electromagnetic spectrum

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7
Q

What is the law that says there should be a planet between Mars and Jupiter?

A

Bode Law

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8
Q

What is the range of light waves that we can see - - ROYGBIV?

A

Visible light

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9
Q

What is the bending of light as it passes through and object?

A

Refraction

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10
Q

What is the change of a wave length due to the movement of an object?

A

Doppler Effect

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11
Q

What is the number of times larger an object appears through a telescope compared to the naked eye?

A

Magnification

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12
Q

What is the term for when the build up of sound waves reach a person?

A

sonic boom

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13
Q

What is the measure of the clarity of images?

A

Resolution

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14
Q

What is it when man made light reduced the visibility of the stars?

A

Light Pollution

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15
Q

What is the spectrum that is produced when a gas is heated?

A

Emission Line Spectrum

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16
Q

What is the color of the coolest stars?

A

Red

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17
Q

What is the height of waves - - how tall the waves are?

A

Amplitude

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18
Q

What is the color of the hottest stars?

A

Blue

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19
Q

What are models of light?

A

Photon

Wave

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20
Q

As a boat moves faster - what will happen to the waves in front of the boat?

A

They will begin to compress

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21
Q

Why is seeing stars in the city difficult?

A

Light pollution

22
Q

Why do stars twinkle?

A

Turbulence of the atmosphere

23
Q

What is the distance between the lens and the focal point called?

A

focal length

24
Q

What can a telescopes with a long focal length increase?

A

magnification

25
Q

What are some reasons we use a telescope?

A

resolve
magnify
brighten

26
Q

What is the term for a telescope that has two lens - an eyepiece and objective?

A

Refraction telescope

27
Q

What happens when things get hotter?

A

The wavelength shortens

The color changes

28
Q

When light undergoes the doppler Effect - - the light moving toward you has what color shift?

A

Red

29
Q

What happens to opposite charges?

A

They attract

30
Q

What happens to like charges?

A

They repel

31
Q

What can create a spectra?

A

Prism
CD’s
Raindrops

32
Q

What is one of the reasons that the Hubble space telescope better than the ones on earth?

A

The light does not pass through the atmosphere

33
Q

What are the only two parts of the electromagnetic spectrum that makes it to the earth’s surface?

A

visible light and radio waves

34
Q

When a boat moves faster than the waves - - What is produced?

A

Waves that overlap ad form a “V” shape

35
Q

What is the term for when high mass stars die violently by blowing themselves apart in these explosions?

A

Supernova

36
Q

What is the term for a series of different types of fusion reactions in high mass stars?

A

Luminous supergiants

37
Q

What is the term for a relatively gentle explosion of hydrogen gas on the surface of a white dwarf?

A

Nova

38
Q

What is the term for the burned out core of a low mass star becomes?

A

White dwarf

39
Q

What is the term for when low mass stars explode into these before expanding into a planetary nebula?

A

Red Supergiants

40
Q

What is the term for the giant collection or cloud of space dust?

A

Nebula

41
Q

What is the term for when massive stars explode their remnants cores become highly compressed clumps of neutrons?

A

Neutron Star

42
Q

What is the term for a spinning neutron star?

A

Pulsar

43
Q

What is the term for what may have formed the early universe?

A

Primordial Black Hole

44
Q

What is the term for the shell or edge of a black hole where light can no longer escape?

A

Event Horizon

45
Q

How is the mass of an object moving at the speed of light affected?

A

It becomes infinitely massive

46
Q

How does moving at the speed of light affect time?

A

Slows it down

47
Q

What did radio waves emitted by pulsars lead scientists to believe at one time?

A

The radio signals were from aliens

48
Q

The remnants (remains) of a supernova explosion will last how long?

A

Millions of years

49
Q

The balance between the force of gravity pushing in on a star and the force of fusion pushing out on a star keeps the star stable - - what is this called?

A

Hydrostatic equilibrium

50
Q

How does mass affect space time?

A

It warps pace time resulting in the bending of light

51
Q

The properties of a black hole are all of the following?

A

Mass
Angular momentum
Electrical charge

52
Q

We assume that there is a black hole in the center of our universe for all of the following reasons?

A

The speed of gases moving near the center

We can see the black hole in our galaxy

Astronomy (10 decks)

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