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Q 1/45
Score 0
Which of the following statements best describes friction?
60
It is a force that occurs between solids and liquids.
It is a force that occurs when surfaces touch each other.
It is a force that occurs between solids.
It is a force that occurs only on rough surfaces
Q 2/45
Score 0
Why can’t a ball roll continuously on a rough surface?
60
The rough texture of the surface permits the movement of the ball.
The rough texture of the surface blocks the movement of the ball.
The rough surface is not made for balls to roll.
The force which enables the ball to move is released.
45 questions
Q.
Which of the following statements best describes friction?
1
60 sec
Q.
Why can’t a ball roll continuously on a rough surface?
2
60 sec
Q.
What eventually happens to a moving object when it moves along a surface?
3
60 sec
Q.
Which moves fastest on a flat surface?
4
60 sec
Q.
A bicycle moves faster on a cemented road than on a bumpy road. Why?
5
60 sec
Q.
Which shows that friction is undesirable?
6
60 sec
Q.
Why does a car travel faster in going down than in going up?
7
60 sec
Q.
Why is it difficult to climb up the stairs rather than to go down the stairs?
8
60 sec
Q.
Which of these will feel the biggest gravitational pull on earth?
9
60 sec
Q.
A baseball and a sheet of paper are dropped at the same time from the same height. What will occur if there is no air resistance?
10
60 sec
Q.
Why did a ball thrown to the air fall back to the ground?
11
60 sec
Q.
The group hung four notebooks of the same kind in a spring balance. The spring scale is pulled downward and readings are recorded.
Notebooks Distance Pulled Spring Scale Reading
1 1 cm 3 N
2 1.5 cm 6 N
3 2.0 cm 9 N
4 2.5 cm 12 N
If the spring is pulled 3.5 centimeters, what would be the spring scale reading?
12
60 sec
Q.
If the distance between two bodies is doubled, the gravitational force between them is _____.
13
60 sec
Q.
What form of energy is produced by plucking the strings of a guitar?
14
60 sec
Q.
The energy produced by vibrating object is _____.
15
60 sec
Q.
When food or liquids become hot, their molecules absorb energy, begin vibrating rapidly, and start to bounce off of each other. As they collide, energy is produced and transferred, which warms and cooks our food. What form of energy is described?
16
60 sec
Q.
If we burn a sheet of paper, energy is given off which we see as a flame or describe as a _____.
17
60 sec
Q.
When heat is released from fuel and boils the water to make steam, it turns the turbine which turns the generator. This will produce _____.
18
60 sec
Q.
Which energy transformation occurs in an electric iron?
19
60 sec
Q.
Rubbing two pieces of wood together can produce heat and later turn into another form of energy.
20
60 sec
Q.
Many appliances you use every day change electrical energy into other forms. When you use a toaster to toast bread, electrical energy is changed to _____ and _____.
21
60 sec
Q.
When you lighted a lamp or candle, the chemical energy of the lamp is changed into light energy, and at the same time it can produce _____.
22
60 sec
Q.
When you plugged a transistor radio in an electrical outlet and switch on the power button, automatically the electrical energy is turned to ____.
23
60 sec
Q.
If you use some appliances, you observe that after few minutes, electrical energy is always produced ____.
24
60 sec
Q.
When we turn on the television, electrical energy changes into light and ____.
25
60 sec
Q.
When we talk on the cellular phones, the speaker of the phone on the other end changes the electrical energy/ electromagnetic waves back into_____.
26
60 sec
Q.
In using door bells and buzzers , electrical energy is transformed to _____.
27
60 sec
Q.
Which is not a function of a simple machine?
28
60 sec
Q.
Which simple machine consists of sloping surface that reduces the amount of force needed to lift something?
29
60 sec
Q.
It is any rigid bar that is free to rotate about its axis or fulcrum.
30
60 sec
Q.
What simple machine is shown in the picture?
31
60 sec
Q.
Which simple machine allows you to gain mechanical advantage in moving object or in applying a force to an object?
32
60 sec
Q.
This simple machine is considered as one of the six classical simple machines which is used as an aid for raising and lowering a load.
33
60 sec
Q.
Which simple machine can be used to separate two objects or portions of an object or hold an object in place?
34
60 sec
Q.
Which simple machine retains or holds things together?
35
60 sec
Q.
Which simple machine is used in a variety of ways to lift loads, apply forces, and to transmit power?
36
60 sec
Q.
Which type of pulley allows you to raise the flag?
37
60 sec
Q.
Which type of pulley doubles your effort but it does not change the direction of your force?
38
60 sec
Q.
Which simple machine has a mechanical advantage that is computed as the ratio of the resistance to the effort?
39
60 sec
Q.
Which does not belong to the group?
40
60 sec
Q.
Which of the following is NOT the function of wheel and axle?
41
60 sec
Q.
The following show proper precautionary measures in using simple machines EXCEPT ____.
42
60 sec
Q.
Which is the correct way of handling simple machines?
43
60 sec
Q.
Who among the four children demonstrates the proper way of handling simple machines?
44
60 sec
Q.
A man tries to push a big box away but he cannot move it. Of the following forces, which causes this to happen?
I. Gravitational force
II. Electrostatic force
III. Frictional Force
