First Astonomy Quiz Flashcards

1
Q

Accelerate

A

to change velocity; to speed up, slow down, or change direction.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

apparent magnitude

A

a measure of how bright a star looks in the sky; the larger the number, the dimmer the star appears to us

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

astrology

A

the pseudoscience that deals with the supposed influences on human destiny of the configurations and locations in the sky of the Sun, Moon, and planets

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

celestial equator

A

a great circle on the celestial sphere 90° from the celestial poles; where the celestial sphere intersects the plane of Earth’s equator

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

celestial poles

A

points about which the celestial sphere appears to rotate; intersections of the celestial sphere with Earth’s polar axis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

celestial sphere

A

the apparent sphere of the sky; a sphere of large radius centered on the observer; directions of objects in the sky can be denoted by their position on the celestial sphere

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

circumpolar zone

A

those portions of the celestial sphere near the celestial poles that are either always above or always below the horizon

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

cosmology

A

the study of the organization and evolution of the universe

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

ecliptic

A

the apparent annual path of the Sun on the celestial sphere

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

epicycle

A

the circular orbit of a body in the Ptolemaic system, the center of which revolves about another circle (the deferent)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

geocentric

A

Ideology that the solar system orbited around the earth.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

heliocentric

A

Ideology that the solar system orbited around the sun.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

horizon (astronomical)

A

a great circle on the celestial sphere 90° from the zenith; more popularly, the circle around us where the dome of the sky meets Earth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Horoscope

A

a chart used by astrologers that shows the positions along the zodiac and in the sky of the Sun, Moon, and planets at some given instant and as seen from a particular place on Earth—usually corresponding to the time and place of a person’s birth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

parallax

A

the apparent displacement of a nearby star that results from the motion of Earth around the Sun

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

planet

A

today, any of the larger objects revolving about the Sun or any similar objects that orbit other stars; in ancient times, any object that moved regularly among the fixed stars

17
Q

precession (of Earth)

A

the slow, conical motion of Earth’s axis of rotation caused principally by the gravitational pull of the Moon and Sun on Earth’s equatorial bulge

18
Q

retrograde motion

A

the apparent westward motion of a planet on the celestial sphere or with respect to the stars

19
Q

year

A

the period of revolution of Earth around the Sun

20
Q

zenith

A

the point on the celestial sphere opposite the direction of gravity; point directly above the observer

21
Q

zodiac

A

a belt around the sky about 18° wide centered on the ecliptic

22
Q

How the solar system came to be

A
  1. Big Bang occurs- solid matter is created and pieces collide and stick to form stars and the solar system.
  2. The sun forms- Massive dust clouds start to spin fast enough to accumulate gas which helped formed the sun.
  3. Inner Planets were formed- Mercury, Venus, Mars, and Earth.
  4. Outer Planters are formed- Jupiter, Saturn, Uranus, and Neptune.
  5. Earth collides with planet theia to make the moon.
  6. Earth begins to cool down- asteroids bombard the earth and dent it up, the collision causes the heat to die down. Causes water for form.
    7.Landmasses on the earth begins to form due to volcanic erupts.
  7. Life forms begins on earth due to chemicals evolving into bacteria and oxygen(atmosphere) being produced.
  8. Continents divided
  9. Ice age forms
23
Q

Rotation

A

Movement in a circular path about a fixed point(axis)
IS either clockwise or counterclockwise.
Dust and debris from the earth’s formation gravitated towards its core in a pattern of an enertial circle.
Causes the apparent flattening of the earth.

24
Q

Relativity

A

Because we are moving(with the earth) in a circular path, everything that appears to follow a straight line is actually curved while everything that is straight is actually a curved line.

25
Q

Natural movement is always:

A

Circular

26
Q

Layers of the atmosphere

A

Troposphere- the sky
Stratosphere- the ‘upper’ sky
Mesosphere- the ‘glow’ of the earth(to high for planes)
Thermosphere- orbit zone(where satellites orbit)
Exosphere- the beginnings of space,

27
Q

Copernican Theory/model

A

A model made by a Greek philosopher who believed that the planets orbited around the sun.

28
Q

Ptolemaic’s Theory/model

A

A made by a philosopher that believed that the planets orbited around the earth.

29
Q

Location on earth is measured by:

A

Longitude and Lagitude

30
Q

Location of the night sky is measured by:

A

Altitude and the Azamith

31
Q

Super cluster(or cluster)

A

A collection of several galaxies, galaxy groups, and dark matter.

32
Q

Asteroid

A

A broken off piece of rock from earth that has no gas atmosphere

33
Q

Comet

A

A broken off piece of rock from earth that has a gas atmosphere, that when it crashes into earth, provides more oxygen.

34
Q

Andromeda

A

The galaxy closest and next to the milky way galaxy and the easiest to see on earth.

35
Q

Perihelion

A

When planets are the closest point to the sun.
Strange astronomical anomalies occur here.

36
Q

Aphelion

A

When planets are the farther point away from the sun.

37
Q

electricity

A

how far off a planet was pulled from it’s originally orbit.

38
Q

Apogee

A

When the moon is at the farthest point away from the earth.