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Semester 2 Final
Test Description: Chapter 3,4
Instructions: Answer all questions to get your test result.
1) When a force is applied to an object it may:
A
stop an object’s motion.
B
All of the above
C
change the direction of a moving object.
D
start an object moving.
2) The ratio of output force to input force is called:
A
mechanical advantage.
B
energy.
C
simple machine.
D
technology.
3) All of the following are considered to be simple machines EXCEPT:
A
gears.
B
a ropes and pulley.
C
a ramp.
D
a bicycle.
4) Any action that is able to change the motion of a body is called a _________.
A
force
B
friction
C
weight
D
newton
5) An object at rest tends to stay at rest and an object in motion tends to stay in motion in a straight line summarizes a portion of Newton’s __________________ law.
A
second
B
third
C
unbalanced
D
first
6) A force that slows down a car _________________.
A
force
B
friction
C
weight
D
newton
7) The ______________ is the English unit of weight equal to about 4.448 newtons.
A
newton
B
pound
C
friction
D
force
8) If the forces on an object all cancel out so the total force is zero, the forces are called ______________.
A
second
B
balanced
C
first
D
unbalanced
9) Gravitational force on the Moon is more than gravitational force on Earth.
A
true
B
false
10) A telescope that uses mirrors instead of lenses to focus distant light at the focal point is known as a reflecting telescope.
A
true
B
false
11) Jupiter, Saturn, Uranus, and Neptune are composed mostly of gases.
A
false
B
true
12) Which of the following is classified as an inner planet?
A
Jupiter.
B
Uranus.
C
Saturn
D
Mercury.
13) Which of the following is classified as a gas planet?
A
Jupiter.
B
Mercury.
C
Venus.
D
Mars.
14) The planet which appears brightest in the night sky is:
A
Venus
B
Mars
C
Mercury
D
Saturn
15) How do gas planets differ from terrestrial planets?
A
They do not fewer moons.
B
They are farther from the Sun.
C
They are more dense.
D
They have thinner atmospheres.
16) A group of small rocky objects found in a belt between Mars and Jupiter are known as:
A
comets.
B
asteroids.
C
meteors.
D
meteorites.
17) Pieces of rock from space large enough to pass through Earth’s atmosphere and strike the ground are called:
A
meteorites.
B
asteroids.
C
meteors.
D
comets.
18) Ancient astronomers were able to develop early models of the solar system more than 1,000 years ago using:
A
satellites.
B
refracting telescopes
C
their eyes.
D
simple telescopes.
19) The type of telescope using lenses to gather visible light is called a(n):
A
refracting telescope
B
X-ray telecope
C
radio telescope
D
reflecting telescope
*select an answer for all questions
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