PLACE ALL ANSWERS ON BUBBLE SHEET (
Select the BEST answer for
each question.
1.
The constellation
Ursa Major was observed by ancient people. Why do we still recognize this constellation
today?
A.
Stars do not
move. C. The stars are so far away that it
B.
Today’s Ursa Major is a takes a long time for them to
different
group of stars. appear to move.
D. Stars in a constellation do
not
change position.
2.
The number of
planets that can be seen from Earth with the unaided eye
is
A.
9. C. 6.
B.
3. D. 5.
3.
All memb3ers of
the solar system travel around the sun in
A.
Retrograde
motion. C. circular
paths.
B.
Orbits. D.
epicycles.
8.
Each sunspot has
a lifespan of
A.
several months to several years. C. a few years.
B.
A few hours to a
few months. D. almost 11
years.
9.
The solar wind is
composed of
A. air currents. C. granules.
B. charged particles. D. auroras.
10. Why does a spacecraft speed up as it re-enters Earth’s
atmosphere?
A.
Earth’s
atmosphere is thinner than outer space.
B.
The craft is
attracted by Earth’s gravity.
C.
The craft’s mass decreases as it approaches Earth.
D.
Earth’s magnetic
field heats the craft.
11. The astronomical unit is the
A.
average distance between C. mass of the sun.
Earth and the sun.
B. mass of Earth. D. average energy
output of the sun.
12. The motion of planets is easier to observe than the
motion of stars
because
planets
A. C. are closer to Earth.
B. rotate. D. produce
more light.
13. A planet’s period is less than one Earth year. The planet must be
A.
Slower than Earth. C. farther from the sun
than Earth.
B.
Larger than
Earth. D. closer to
the sun than Earth.
14. A planet’s speed increases as it nears the sun because
the
A.
Gravitational
force is C.
gravitational force is
increasing. becoming
weaker.
B.
Temperature is increasing. D. planet’s mass is
increasing
Indicate True (A) or False (B) for each of the
questions below.
15. Solar astronomers must use special glasses when
working with a solar telescope.
16. Then sun’s diameter is about 50 times the diameter of
the earth.
17. Galileo is believed to be the first astronomer to use
a telescope.
18. Astronomers use the equation E=mc to the 2cnd power to
predict how long the sun will shine.
19. The temperature of the sun’s surface is slightly
warmer than its interior.
20. A particle traveling at the speed of light takes a
little more than 8 minutes to travel from the sun to the earth.