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Chapter 29 Flashcards | StudBud
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Chapter 29
The steady state theory
Precession is
Chapter 29
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Solar System
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1
Precession is
the wobble of the Earth on its axis.
the rotational period of a planet.
2
The steady state theory
states on a large scale view the universe does not change.
explains that the universe is constantly changing.
3
What are the two major gases in Earth's atmosphere?
Carbon Dioxide & Oxygen
Nitrogen & Oxygen
Nitrogen & Sulfur
4
Dark matter is
an understood form of matter that exists in shadows.
an unidentified type of matter.
5
What accounts for the difference between detectable mass and the amount of gravity observed?
Dark matter.
Gray water.
6
The steady-state theory states that
the universe is expanding.
the universe is contracting.
the universe large scale is, and always has been, stable.
7
What event cleared debris from our solar system and set the size of the planets?
The ignition of the Sun.
The Big Crunch.
The formation of Jupiter.
8
Retrograde motion is the
apparent backwards motion of an object in the sky.
backwards revolution around the sun.
9
Unlike most planets in the solar system, Venus rotates
the fastest.
the slowest.
backwards (retrograde).
10
A comet
has a highly eccentric orbit.
typically orbits the sun between Mars and Jupiter.
11
Uranus has an almost 90
0
tilt to its
magnetic field.
axis.
12
Cosmology is
the study of cosmetics.
the study of the origin of the universe.
13
Mars has water in the form of
ice.
water.
ice & gas.
14
Dark energy is
an unknown form of energy accelerating expansion.
another term for nuclear fusion.
15
The Big Bang Theory states that
all matter was once in a hot, dense region of space.
the universe has always existed as it does today.
16
Saturn's rings were likely formed from
leftover gas and dust alone.
a moon that was destroyed.
captured asteroids alone.
17
Why is the universe expanding at a faster rate?
Dark energy.
Light speed.
18
Jupiter is the largest planet but also has the fastest
winds of the planets.
revolution of the planets.
rotation of the planets.
19
A terrestrial planet is
a rocky planet with a solid surface.
one of the four outer planets.
20
A nebula is a
group of asteroids.
small cold star.
cloud of dust, hydrogen, helium, and other gases.
21
The solar system formed from
the remnants of a star.
an asteroid belt.
22
Eccentricity is a measure of a planet's
rotational speed.
elliptical orbit.
orbital speed.
23
What did Edwin Hubble observe about light from other galaxies?
The light is red shifted.
The light is blue shifted.
24
Neptune has been visited by
the space probe Voyager 2.
the Juno space probe.
25
An astronomical unit is
the distance between the Earth and the moon.
how far light travels in a year.
the average distance between the Earth and the Sun.
26
Asteroids are
rock and ice from the formation of the solar system.
small objects that enter the Earth's atmosphere.
objects that develop "tails" as they near the sun.
27
Gas giants are
small planets that orbit in the outer solar system.
the four outer planets in the solar system.
28
Does Mercury have an atmosphere?
Yes
No
29
The big bang theory states
has always been expanding.
that all matter was once densely packed in a small area.
30
How many moons does Venus have?
2
65
0
