Question: 1)

Why do comet’s tails always point away from the Sun?
_______
A)

because of radiation pressure.
B) Because when they move away from the Sun they begin to lose inertia.
C) Because the inner planets cause the ice and other volatile materials to be pulled towards their orbits.
D) Because of the comet’s interaction with dark matter.

2)

If one had the opportunity to walk on Triton, Neptune’s largest moon, what would you observe the geysers to be spewing?
____
A) Liquid nitrogen

B) Liquid oxygen
C) Liquid water

D) Liquid hydrogen

3)

Asteroids orbit the

A) Sun.
B) Moon.
C) Earth.
D) all of these
E) none of these

4)

Comets orbit about the
______
A) Moon.
B) Sun.
C) Earth.
D)all of these
E) none of these

5)

The predominant gas in the atmosphere of Venus is
______
A)
oxygen.
B) nitrogen.
C) water vapor.
D) carbon dioxide.
E) methane.

6)

The ecliptic
____
A) refers to the gases from which our solar system formed.
B) is the average distance between the Sun and Earth.
C) the plane of Earth’s orbit.
D) occurs during a solar or lunar eclipse.

7)

What is the likely cause of the 98° tilt of Uranus’s axis?
_____
A) Neptune’s effect on Uranus’ gravitational field
B) Fluid wave dynamics due to its large molten core
C) A collision with a large body early in the solar system’s evolution
D) Distorted magnetic poles due to its large molten iron core

Between which planets is the asteroid belt found?
_____
A) Between Mars and Jupiter
B) Between Earth and Venus
C) Between Jupiter and Neptune
D) Between Earth and Mars

9) A small rock in interplanetary space is called a_______
A) meteorite.

B) meteoroid.

C) meteor.

10) For what reason was Pluto demoted from full planetary status in 2006? ____
A) Because Pluto was discovered to be a twin planet system
B) Because of objects as large or larger than Pluto in the Kuiper belt
C) Because according to the standard definition, no planet can be smaller than the Earth’s moon
D) Because Pluto resides outside of the zone that can truly be described as the solar system

11) When a contracting hot ball of gas spins into a disk shape, it cools faster due to __
A) decreased insulation.
B) increased convection currents.
C) eddy currents.
D) increased radiation transfer.
E) increased surface area.

12 How deep is the Photosphere? ____
A) 300 meters

B) 300 km
C) 500 km

D) 500 meters

13) the reason we don’t have eclipses monthly is because of the ____
A) relatively close distance of the Moon and Earth.
B) relatively long distance to the Sun.
C) tapering of the Sun’s rays.
D) 23° tilt of the Earth’s axis.
E) different orbital planes for Earth and the Moon.

14) the predominant gas in the atmosphere of Earth is _____
A) oxygen.
B) nitrogen.
C) water vapor.
D) carbon dioxide.
E) methane.

15) The gravity lock of the Moon to Earth is similar to the action of a__
A) master key.
B) spinning top.
C) giant pendulum.
D) tidal wave.
E) magnetic compass.

16) Evidence of the solar wind on Earth is the ____
A) solar sunspots, seen with care by the naked eye.
B) higher ocean tides in winter.
C) Aurora Borealis.
D) preponderance of hurricanes at certain latitudes.
E) meteor showers in the upper atmosphere.

17) An active galactic nucleus _____
A) is a place of intense star formation.
B) is a giant dust cloud at the center of a galaxy.
C) is a supermassive supergiant star that resides at the center of larger galaxies.
D) arises from the gigantic black hole at the center of a galaxy.

18) The temperature of a star is evidenced by its __
A) distance.
B) brightness.
C) color.
D) angular momentum.
E) rate of burning.

19) The observable universe is _____
A) the minor portion of the universe we can observe.
B) part of the universe visible to the unaided eye.
C) the part of the universe that is within the visible electromagnetic spectrum.
D) about 100 billion light years across.

20) A white dwarf is a former______
A) low-mass star.
B) white giant.

C) high-mass star.

21) When a star collapses to half size, the gravitational field at its surface _____
A) remains constant.

B) doubles.
C) quadruples.
D) increases eightfold.

22)

The Milky Way galaxy is _____
A) in the process of colliding with the Magellanic Cloud galaxies.
B) a spiral galaxy.
C) where Earth resides.
D) All of the above

23) most of the atoms in the universe are thought to be _____
A) iron.
B) elements unknown at present.
C) helium.
D) about equal amounts of hydrogen and helium.
E) hydrogen.

24) what determines if a star becomes a

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