DISD CA 6th Science Unit 06
2015-16
1.
(6.11A)
The following image is from a newly discovered solar system.
Based on your knowledge of our solar system, which planet would take the least amount of time to orbit the star?
A. Planet A
B. Planet B
C. Planet C
D. Planet D
2.
A.
B.
C.
D.
3.
Which of the following is true about the planets in the solar system?
All planets complete one revolution about every 365 days.
All planets have one moon.
All planets have an elliptical orbit.
All planets have the same surface temperature
(6.11A)
A student writes the following in his notes:
This object is much bigger than Earth. It is mostly gas, is generally round, and has many moons.
Which of these is the student describing?
A. The Sun
B. Jupiter
C. Venus
D. Mars
(6.11A)
4. (6.11B) The planets of the solar system revolve around the Sun in orbits because of the Sun's —
A. gravity
B. rotation
C. heat energy
D. magnetic field
5. (6.11B) Which statement explains what would happen if gravity between Earth and the Sun suddenly
didn’t exist?
A. Earth would move off into space in a straight line at a constant speed.
B. Earth would move off into space in a curved path. Its speed would gradually decrease.
C. Earth would continue to orbit the Sun exactly as it does now.
D. Earth would continue to orbit the Sun, but would move more slowly that it does now.
6.
(6.11A / 6.2E) There
are 8 known planets orbiting the Sun. The data table below lists some facts about the
planets.
Planet
Number of
moons
Period of revolution (in
Earth days)
Length of one
day
Mass (kg)
Mercury
0
87.9
1407.6
3.30 x 1023
Venus
0
224.7
5832.5
4.86 x 1024
Earth
1
365.25
23.93
5.97 x 1024
Mars
2
686.98
24.62
6.41 x 1023
Jupiter
63
4330.6
9.92
1.89 x 1027
Saturn
56
10755.7
10.65
5.68 x 1026
Uranus
27
30687.2
17.24
8.68 x 1025
Neptune
13
60189.0
16.11
1.02 x 1026
If a 9th planet were detected in the region past Neptune, what is one thing about it you could say
for certain?
A. Its period of revolution would be greater than Neptune.
B. Its mass would be greater than Jupiter.
C. The length of one day would be greater than Mars.
D. The number of moon would be greater than Saturn.
7. (6.11B) Assuming each sphere was made of the same material (same mass/same density), in which
scenario would there be a greater gravitational attraction between the spheres?
8.
(6.11B)
The diagram below models Mercury and Venus orbiting the Sun.
What force causes Venus to travel along a curved path instead of moving in a straight line as indicated by
the dashed line in the diagram?
A. Electromagnetic attraction between the Sun and Venus
B. Gravitational attraction between the Sun and Venus
C. Electromagnetic attraction between Mercury and Venus
D. Gravitational attraction between Mercury and Venus
9.
(6.11C) A timeline is given, which includes some significant milestone years in exploration. A student is
writing a report on the history of space exploration.
Who should be included for improving the design of the telescope in the 1600s and discovering many
objects in the solar system?
A. Hipparchus
B. Galileo
C. Gagarin
D. Armstrong
10.
(6.11C)
What is any object that revolves around another object in space?
A. rocket
B. vacuum
C. satellite
D. shuttle
11.
(6.11C)
A scientist is sending a probe into space. Why would the scientist do this?
A. To carry human passengers
B. To land on a star
C. To gather data
D. To carry supplies