Please take into account the following points before starting
There will be several questions with increasing difficulty.
There is only one correct answer for each question.
You only have a few minutes to complete the test.
You can skip questions and answer them later.
Unanswered questions will count as errors.
If gear A turns clockwise, which way does gear B turn?
clockwise
counterclockwise
stays still
1/20
Which lever will lift the heaviest weight?
short
long
same
2/20
A block is sliding down a ramp. Which force is opposing its motion?
friction
gravity
normal
3/20
If you increase the force applied to a spring, what happens to its length?
increases
decreases
stays same
4/20
A pulley system is used to lift a heavy object. How does the effort force compare to the load?
less
more
equal
5/20
A simple machine reduces the amount of force needed to do work. What is the trade-off?
increased distance
decreased time
no trade-off
6/20
Which type of energy is stored in a stretched rubber band?
potential
kinetic
thermal
7/20
A ball is rolling down a hill. What happens to its speed?
increases
decreases
stays same
8/20
A lever is used to pry open a nail. Where should the fulcrum be placed for maximum force?
close to the nail
in the middle
far from the nail
9/20
A ramp is used to lift a heavy object. How does the ramp reduce the effort force?
increases distance
decreases distance
changes direction
10/20
A screw is a type of inclined plane. What is its main function?
fastening
cutting
lifting
11/20
A wedge is used to split wood. What is the shape of a wedge?
triangular
rectangular
circular
12/20
A wheel and axle is used to move a heavy load. How does the size of the wheel affect the effort force?
larger wheel, less force
smaller wheel, less force
no effect
13/20
A pulley system can change the direction of a force. How many pulleys are needed to change the direction by 180 degrees?
one
two
three
14/20
A hydraulic system uses a liquid to transmit force. How does the pressure in a hydraulic system change?
increases with depth
decreases with depth
stays constant
15/20
A gear system is used to transmit power. How does the size of a gear affect its speed?
larger gear, faster
smaller gear, faster
no effect
16/20
A inclined plane reduces the effort force needed to lift an object. What is the trade-off?
increased distance
decreased distance
no trade-off
17/20
A lever can be used to multiply force. What are the three classes of levers?
first, second, third
simple, compound, complex
linear, rotary, reciprocating
18/20
A wedge is used to split wood. How does the angle of the wedge affect its effectiveness?
sharper angle, more effective
blunter angle, more effective
no effect
19/20
A screw is a type of inclined plane. How does the pitch of a screw affect its holding power?
finer pitch, greater holding power
coarser pitch, greater holding power
no effect
20/20
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