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GEOL: Exam 3 > Exam 3 Practice Questions > Flashcards

Exam 3 Practice Questions Flashcards

(59 cards)

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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?

Study These Flashcards
A

-Stony
-Irons
-Stony-Irons

25
What is the fourth planet from the sun?
Mars
26
What is the ninth planet from the sun?
There is no ninth planet. The Milky way only identifies as having eight planets. Pluto became a Dwarf planet.
27
What planet in the Milky way is called the "windy planet"?
Neptune
28
What is the closest planet to Earth?
Venus
29
What planet has a 300 year old plus cyclonic storm which appears to be a great red spot?
Jupiter
30
What planet most closely resembles Earth's Moon?
Mercury
31
What are the characteristics of Jovian planets?
Large, Gaseous, many moons
32
What are the characteristics of Terrestrial planets?
Small, Dense, few moons
33
What planet within the Milky Way has more moons than the others?
Saturn
34
Low-frequency electromagnetic radiation travels at different speeds. (True or False?).
False
35
Low-frequency electromagnetic radiation has more energy than high-frequency waves. (True or false?).
False
36
The hotter the star, the shorter the wavelength. (True or False?).
True
37
Which of the following colors on the electromagnetic spectrum has the shortest wavelength?
Blue
38
Is the following statement true or false? Gamma Rays, higher frequency (short wavelength), higher energy
True
39
Does the Earth's atmosphere allow all electromagnetic radiation to reach the surface?
No. The Earth's atmosphere protects Earth against some of the more harmful electromagnetic radiation such as UltraViolet Radiation (UV Rays).
40
What is the most important tool to measure light sources from outer space?
The spectroscope
41
Is the following statement true or false? The Doppler effect is caused by the relative motions of the source and the observer.
True
42
If a yellow star is moving away from us very rapidly, what color will it appear to be?
orange
43
What are the two types of optical telescopes?
Reflector and refractor
44
What is the lowermost atmosphere of the sun called?
The Chromosphere
45
What part of the sun contains the granules and sunspots?
The Photosphere
46
What is the outermost atmosphere of the sun called?
The Corona
47
What life cycles do sunspots follow?
Sunspots follow an 11 year life cycle.
48
What is the source of the sun's energy?
The source of the sun's energy is sourced from nuclear fusion.
49
Where do the most abundant Aurora Borealis (the northern and southern lights) occur?
At the poles in association with high sun spot activity.
50
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.
True
51
What observed phenomenon is associated with the Big Bang Theory?
Galaxies exhibit Red Doppler shift
52
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.
True
53
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.
False
54
What does the Hertzsprung-Russel diagram plot?
The H-R Diagram plots the brightness verses temperature
55
What is the stages of a star's birth and death in order?
Birth, Protostar, Main Sequence Star, Red Giant Stage (Med/Large), Burnout and Death.
56
What are the densest objects known to exist in the Milky Way?
Black Holes
57
What is the most abundant type of galaxy?
elliptical galaxies
58
What classification of galaxies are mainly constructed with young stars?
Irregular
59
What galaxy shape is the Milky Way?
Spiral

GEOL: Exam 3 (2 decks)

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