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GEOL: Exam 3 > Exam 3 Practice Questions > Flashcards

Exam 3 Practice Questions Flashcards

1
Q

What are we studying in this course? Astrology or Astronomy?

A

Astronomy

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2
Q

What did the scientist Ptolomy support?

A

Planets revolve around the sun

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3
Q

What is the apparent backwards motion of the planets called?

A

retrograde motion

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4
Q

What did the scientist Copernicus believe?

A

The sun was at the center of our solar system

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5
Q

What was the scientist Brahe credited with?

A

Brahe did not believe Copernicus, who supported that the sun was at the center of our solar system due to the lack of stellar parallax.

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6
Q

What was scientist Kepler credited with

A

Kepler developed the 3 basic laws of astronomy

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7
Q

What was scientist Galileo credited with?

A

Galileo invented the telescope

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8
Q

What was scientist Newton credited with?

A

Newton used gravity to explain elliptical motion

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9
Q

What scientist discovered sunspots?

A

Galileo

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10
Q

What are constellations?

A

groupings of stars

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11
Q

What is the zodiac sign, and how does it correlate with astronomy?

A

The zodiac is a group of constellations lined up with the Earth and Sun

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12
Q

What does the rotationof planets entail?

A

Rotation of planets involve the planets turning around their axis.

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13
Q

Define Sidereal

A

the point of reference related to a distant star

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14
Q

How does the Earth Orbit? (circular, Variable based on seasons, elliptical, or hydrohellio?).

A

The Earth orbits elliptically.

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15
Q

Will the north star always be Polaris? (True or False).

A

False

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16
Q

Define Synodic

A

relating to the time to cycle through phases

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17
Q

Is an Eclipse named by the object obscured? (solar eclipse/ lunar eclipse)? (True or False?).

A

True

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18
Q

What is the only phase of the Moon that allows a Solar Eclipse to take place?

A

A New Moon

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19
Q

What is the size of Earth’s Moon in comparison to the gravitational force of Earth?

A

1/4 the size and 1/6 the gravitation of Earth

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20
Q

What does the “maria” on the Moon signify?

A

The Maria on the Moon’s surface is dark, smooth regions of lava flows.

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21
Q

How many planets and structures is our solar system recognized by?

A

The Milky Way is categorized by eight planets, the sun, and an asteroid belt.

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22
Q

What two planets is the Asteroid belt located between?

A

The Asteroid belt is located between Mars and Jupiter.

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23
Q

What are Comets often referred to based on appearance?

A

Dirty snowballs

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24
Q

How are Meteorites classified?

A

-Stony
-Irons
-Stony-Irons

25
Q

What is the fourth planet from the sun?

A

Mars

26
Q

What is the ninth planet from the sun?

A

There is no ninth planet. The Milky way only identifies as having eight planets. Pluto became a Dwarf planet.

27
Q

What planet in the Milky way is called the “windy planet”?

A

Neptune

28
Q

What is the closest planet to Earth?

A

Venus

29
Q

What planet has a 300 year old plus cyclonic storm which appears to be a great red spot?

A

Jupiter

30
Q

What planet most closely resembles Earth’s Moon?

A

Mercury

31
Q

What are the characteristics of Jovian planets?

A

Large, Gaseous, many moons

32
Q

What are the characteristics of Terrestrial planets?

A

Small, Dense, few moons

33
Q

What planet within the Milky Way has more moons than the others?

A

Saturn

34
Q

Low-frequency electromagnetic radiation travels at different speeds. (True or False?).

A

False

35
Q

Low-frequency electromagnetic radiation has more energy than high-frequency waves. (True or false?).

A

False

36
Q

The hotter the star, the shorter the wavelength. (True or False?).

A

True

37
Q

Which of the following colors on the electromagnetic spectrum has the shortest wavelength?

A

Blue

38
Q

Is the following statement true or false?
Gamma Rays, higher frequency (short wavelength), higher energy

A

True

39
Q

Does the Earth’s atmosphere allow all electromagnetic radiation to reach the surface?

A

No. The Earth’s atmosphere protects Earth against some of the more harmful electromagnetic radiation such as UltraViolet Radiation (UV Rays).

40
Q

What is the most important tool to measure light sources from outer space?

A

The spectroscope

41
Q

Is the following statement true or false?
The Doppler effect is caused by the relative motions of the source and the observer.

A

True

42
Q

If a yellow star is moving away from us very rapidly, what color will it appear to be?

A

orange

43
Q

What are the two types of optical telescopes?

A

Reflector and refractor

44
Q

What is the lowermost atmosphere of the sun called?

A

The Chromosphere

45
Q

What part of the sun contains the granules and sunspots?

A

The Photosphere

46
Q

What is the outermost atmosphere of the sun called?

A

The Corona

47
Q

What life cycles do sunspots follow?

A

Sunspots follow an 11 year life cycle.

48
Q

What is the source of the sun’s energy?

A

The source of the sun’s energy is sourced from nuclear fusion.

49
Q

Where do the most abundant Aurora Borealis (the northern and southern lights) occur?

A

At the poles in association with high sun spot activity.

50
Q

Is the following statement true or false?
Looking through a telescope at an object that is 2 billion light-years away says we are looking at the past of what happened to that object 2 billion years ago.

A

True

51
Q

What observed phenomenon is associated with the Big Bang Theory?

A

Galaxies exhibit Red Doppler shift

52
Q

Is the following statement true or false?
Doppler effect can help determine both movement toward or away as well as the velocity of 2 different objects.

A

True

53
Q

Is the following statement true or false?
Nebulae is dust and gasses from which new stars are born or die. and are called “Blue” when close to very-hot stars.

A

False

54
Q

What does the Hertzsprung-Russel diagram plot?

A

The H-R Diagram plots the brightness verses temperature

55
Q

What is the stages of a star’s birth and death in order?

A

Birth, Protostar, Main Sequence Star, Red Giant Stage (Med/Large), Burnout and Death.

56
Q

What are the densest objects known to exist in the Milky Way?

A

Black Holes

57
Q

What is the most abundant type of galaxy?

A

elliptical galaxies

58
Q

What classification of galaxies are mainly constructed with young stars?

A

Irregular

59
Q

What galaxy shape is the Milky Way?

A

Spiral

GEOL: Exam 3 (2 decks)

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