Motion, Forces And Energy Unit Test

37 Questions  I  By CharlieC23
Chapters: 1, 2, 5 and 6

  
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1.  A satellite in orbit around Earth is always falling toward Earth.
A.
B.
2.  An object cannot be accelerating if it is changing direction.
A.
B.
3.  The formula, Work/ Time (Work divided by Time) is used to calculate
A.
B.
C.
D.
4.  Patty was walking very quickly through the cafeteria with her tray full of food when she tripped over a broomstick and flew forward along with all of her food.   This is an example of Newton's first law of motion which states,  "...an obect in motion will stay in motion..."
A.
B.
5.  A rubber band that is flying across the room is moving because it has kinetic energy.
A.
B.
6.  A 10-kg ball is accelerated 500m/s (squared) by a force of...
A.
B.
C.
D.
7.  Kinetic energy depends on 
A.
B.
C.
D.
8.  Match the sentence with the apropriate word.
A. An object is in motion if it is moving relative to a(n)
A.
B. To calculate acceleration, divide the change in ______________ by the time during which the acceleration occurs
B.
C. The velocity of an objectgives both its speed and
C.
D. You can calculate an average if you know both the total distance and the total time of a trip.
D.
9.  Your body converts chemical energy to all of the following EXCEPT
A.
B.
C.
D.
10.  A rider finishes a 120 km bicycle trip in 3 hours.  The average speed of the rider is....
A.
B.
C.
D.
11.  A (n) ______________ can cause an objects motion to change
A.
B.
C.
D.
12.  Potential energy is the energy 
A.
B.
C.
D.
13.  The force of friction acts between all objects in the universe.
A.
B.
14.  Work is the transfer of energy.
A.
B.
15.  A moving object can do work so it has potential energy.
A.
B.
16.  Plants convert electromagnetic energy to chemical energy.
A.
B.
17.  An electric blanket converts electrical energy to 
A.
B.
C.
D.
18.  Forces can be added together on if they are acting on different objects.
A.
B.
19.  Match the sentence with the apropriate word.
A. _____________ is the total energy of all of the particles in a substance
A.
B. The movement when heated fluid rises and is replaced by a cooler fluid is called a(n) _________________ current.
B.
C. The temperature at which a solid changes to a liquid is the ______________.
C.
D. A(n) __________________ is a device that transfers thermal energy from a cool region to a warm region.
D.
20.  Elastic potential energy is associated with objects that can be stretched. 
A.
B.
21.  The energy stored in fossil fuels is released by burning.
A.
B.
22.  Friction acts in a direction __________ to the direction of an object's motion
A.
B.
C.
D.
23.  The state of a substance depends ont he amound of thermal energy it posesses.
A.
B.
24.  Temperature is a measure of the average potential energy of each particle within an object.
A.
B.
25.  Potential energy that depends on height is gravitational potential energy.
A.
B.
26.  A girl throws a ball 15m into the air.  The ball has a maximum potential energy at a height of 
A.
B.
C.
D.
27.  The force exerted by gravity is stronger if two objects are closer.
A.
B.
28.  A(n) ___________ causes objects to move in a circle
A.
B.
C.
D.
29.  Newtons second law of motion states the relationship of mass, acceleration and force.  It says that....
A.
B.
C.
D.
30.  On the Celcius scale, the number 0 is assigned to the temperatures at which water condenses. 
A.
B.
31.  An airplane that moves 50 meters in one second has a speed of....
A.
B.
C.
D.
32.  Jake and Tom want to see who is strogest, so they got a rope and decided to play tug-o-war.  Both boys pulled at the rope with all of their strength, but neither of them moved.   This is called unbalanced force. 
A.
B.
33.  Power is the rate at which energy is lost. 
A.
B.
34.  The law of conservation of energy states that when one form of energy is converted to another, SOME energy is destroyed. 
A.
B.
35.  The amount of matter in an object is called its 
A.
B.
C.
D.
36.  According to Newton;s second law of motion, acceleration increases as force increases, if mass stays the same.
A.
B.
37.  Unless an object at rest is acted upon by a force, it stays at rest due to its 
A.
B.
C.
D.
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