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Worksheetsmore about forces and Sound
Total questions: 105
Worksheet time: 1hrs 11mins
Gravitational force is the force of attraction between two objects.
True
False
A mass of 1 kg has a weight of about 10 N. Dira has mass 60 kg gram. What is Dira's weight on the Earth?
60 N
6 N
600 N
6000 N
Object have weight because of the ... force acting on them.
(a)
Mass is measured in units ....
gram
newton
centimeter
milimeter
The unit of force is ....
coloumb
newton
centimeter
kilogram
What is the force that causes objects to fall to the ground?
air resistance
gravity
water resistance
magnet
Nino throws a volleyball. In which direction does the volleyball move?
move downward to the ground
move sideward
move upward
the volleyball stay
Weight is measured using an electronic balance.
True
False
Look at the picture! Is there any work done in this diagram?
Yes, there is.
No, there is not.
Depend on
The box start moving
Friction is the force which opposes motion when two surfaces are in contact.
True
False
What is the force that stops a ball that is rolling on the beach?
air resistance
water resistance
gravity
friction
What are the effects of forces?
Force can change the shape of things.
Force can make a thing start or stop moving.
Forces can make a moving thing go faster or slower.
Forces can attract another materials.
Look at the picture! Are the forces balanced?
Yes
No
Depend on
The box move faster
Forces act in ..., in opposing directions.
one
pairs
triple
quadruple
When a force moves an object, there is a transfer of energy and ....
energy
work is done
mass
air resistance
What are the effects of forces?
Force can change the shape of things.
Force can make a thing start or stop moving.
Forces can make a moving thing go faster or slower.
Forces can attract another materials.
Friction is the force which opposes motion when two surfaces are in contact.
True
False
The Moon has a ... mass than the Earth and therefore, its gravitational force is weaker.
Smaller
Bigger
Longest
Shortest
Which of these paper that will fall to the ground first?
the paper that not folded
the paper that folded
the paper that crushed
No one
Air resistance is the ... force that acts on an object as it moves through air.
Magnetic
Lift
Weight
Frictional
This question is about a rollercoaster. This is the statement "A rollercoaster is able to climb up the hill because …". Complete the statement to the correct explanation.
… friction in the dip increases its movement.
… its movement gives it the energy to get to the top of the hill.
… there is no friction.
… there is no air resistance in the dip
Jamila has a toy with a spring. She makes the toy move upwards and downwards. Complete the sentence. When the toy bounces up, the upward force is …………..…………… than the downward force.
smaller
greater
Zahra has a toy with a spring. She makes the toy move upwards and downwards. What does Zahra do to make the toy bounce faster? Circle the correct answer.
increase the weight of the toy
push on the spring all of the time
push on the spring less often
push on the spring more often
use a longer spring
Which picture show the correct direction of frictional force?
Hasan and Husein roll marbles down a slope. They measure the distance the marbles roll along the floor. They change the angle of the slope and see how the distance changes. Tick () the two boxes that make this investigation a fair test.
keep the angle of the slope the same
repeat each test five times
start the marble from the same place each time
use the same marble
wear safety spectacles
Ahmed is bouncing a toy animal on a spring. He investigates how the toy bounces up and down. Ahmed has some ideas. Which of the following ideas are true? Which statement is the correct idea?
I can pull down on the toy hardly. If I let go then the toy will not bounce up very high.
I think that the toy will stop bouncing. This is because of the force of friction.
Ahmed and Carlos investigate forces.
Ahmed and Carlos pull the rope.
They pull the rope with the same force.
Which direction will the material move?
Circle the correct answer.
Complete the following sentences about friction. If friction acts on an object the speed of the object ....
slower
faster
does not change
A ball is rolling in the direction of C. Where a force must be applied in order to make it move faster in the same direction?
P
Q
R
S
Burhan used the same amount of force to move his toy over four types of surfaces. He recorded the distance moved by his toy car in the table below as shown below. Arrange the four surfaces from the smoothest to the roughest.
W, X, Y, Z
X, W, Y, Z
Y, Z, W, X
X, W, Z, Y
Amalia wanted to investigate if the length of the wing of a shorea has an effect on the rate of its fall. She released the fruit from a fixed height as shown below. Which two changeable variables must be measured for her investigation?
A: The length of the wing
B: The heigh of the fruit was dropped
C: The distance it was dispersed from the fan
D: The time taken for the fruit to land on the ground.
A and B only
A and D only
B and D only
C and D only
The diagram above shows the path of a ball after a boy has kicked it. Point P, Q and R are different positions along the path of the ball. Which of the following statement(s) is/are true about the forces acting on the ball during its movement from P to R?
A: The kicking force at P is a push.
B: At point R, fricitional force is acting upwards.
C: Gravitational pull did not act on the ball at point Q.
D: The forces acting on the ball caused it to change directions along the path.
A only
B and C only
A, B, and D only
A, B, C, and D
A beach ball is moving in direction X as shown in the figure below. Which of the following are the possible outcomes if a force is applied on the ball in direction Y?
A: The ball slows down
B: The ball stops moving
C: The ball bounces upwards
D: The ball moves in direction Y
A and B only
A and C only
A, B, and D only
B, C, and D only
Fatimah dan Jamilah are playing a game of squash. What will happen to the ball when Lisa hits towards wall A?
The ball will stop moving
The ball will roll down wall A.
The ball will move towards Nelly and Lisa.
The ball will stay in the corner between wall A and wall B.
The diagram below show four different set-ups. The same block of wood was pulled across the same table. Which one of these set-ups, A, B, C or D, would produce the greatest frictional force?
A
B
C
D
pulled a wooden block horizontally along tile X using a spring balance. He recorded the amount of force needed to move the wooden block over 100cm. What is the aim of his experiment?
To find out how the texture of the tile affects the pulling force.
To find out how the mass of the wooden block affects the pulling force.
To find out how the texture of the tile affects the distance moved by the wooden block.
To find out how the mass of the wooden block affects the distance moved by the wooden block.
Two objects, X and Y, of the same size, were pushed with an equal amount of force on the same surface. The starting positions are final positions are shown above. What can you infer from the activity?
Object X has a greater mass than object Y.
Object X has a greater volume than object Y.
The gravity acting on object X is greater than the gravity acting on object Y.
The surface on which object X was pushed is rougher than the surface on which object Y was pushed.
Four balls, J, K, L and M, were hung from the same height. Each ball was then dropped onto a tray of sand below. Based on the results, which of the following statements is/are correct?
A : The weight of Ball L is the heaviest.
B : The weight of the ball does not depend on its size.
C : The gravitational force acting on Ball is greater than that acting on Ball M.
A only
B only
A and C only
A, B, and C
Amir took two identical sheets of paper and let them fall several times to the ground in an enclosed room as shown in picture A. He found out that the time taken for the papers to reach the ground was about the same.
He then squashed one of his sheet of paper into a tight ball and repeated the experiment as shown in picture B. This time, he found out that the squashed ball of paper fell to the ground more quickly than the sheet of paper. Which of the following is the likely reason to explain the difference in the time taken between the sheet of paper and the squashed paper to reach the ground?
The sheet of paper weighed more when it was squashed into a ball.
There is a greater force pushing against the sheet of paper upwards.
Gravity acts more on the squashed paper than on the sheet of paper.
Magnetic force of the Earth has acted on the squashed paper more than the sheet of paper.
The four activities (A, B, C and D) below show forces at work. Which of the following activities require the presence of frictional force to carry out?
A and B only
A, C, and D only
A, B, and C only
A, B, C, and D
Alexa pushes on a door to open it. How does the concept of forces explain why the door opens?
The door pushed equally hard on Jeanie as she pushed on it.
The door moved in the opposite direction of the pushing force.
The door moved in the direction of the pushing force.
The door opened because of noncontact forces.
To find out if gravity affects all objects the same way, you should plan to investigate the time it takes a penny and a quarter to fall from an equal height. Which step should be a part of your experiment?
Drop the penny from a height of 2 meters and the quarter from a height of 4 meters.
Drop the penny from a height of 4 meters and the quarter from a height of 2 meters.
Drop both the penny and the quarter from a height of 4 meters.
Drop the penny from a height of 4 meters and throw the quarter from a height of 4 meters.
Why is friction classified as a contact force?
Friction can act when objects are not in direct contact.
Friction acts when two objects rub against each other.
Friction causes a change in motion.
None of the other answers answer choices.
Tom is mowing his lawn and the lawnmower is moving forward. Which of the following statements must be true?
There are no forces acting on the lawnmower.
The only force acting on the lawnmower is gravity.
Tom is applying a force on the lawnmower.
The total force on the lawn mower is zero.
Rubbing two sticks together to make a fire is an example of
(a)
Students test the effect of forces that act from distance. Thus causing an object to move. They discover that two forces have this effect on object. These forces are
friction and gravity
Gravity and magnetism
Magnetism and friction
gravity and density
When designing an experiment, why is it important to test only one variable?
Testing one variable explains what caused the change once data has been gathered.
Testing one variable collects inaccurate data and repeats the investigation more than necessary.
Testing one variable decreases the reliability of the investigation.
It is not necessary to test only one variable.
In the picture below one object is attracted to another by
gravity
a push
magnetism
friction
a pull
In the science class students learn that friction is the resistance to motion when two objects rub together. The students decide to design an experiment at home to compare frictionon dry and icy surfaces. Which question is the most beneficial for this type of investigation?
Is it faster to sled down an icy hill or down a rough gravel driveway?
What is friction?
What makes ice slippery?
What effect does the height of the hill have on the distance an object travels.
What force is being tested when an object is forced downward toward the center of Earth?
Gravity
Air pressure
Magnetism
Friction
What is the unit of measurement for force?
gram
newton
pound
meter
Students wrap a copper wire around an iron nail and connect the ends of the wire to battery. The nail attracts other small nails and paper clips as they stick together. What force keeps the nails and paper clips attached together/
gravity
electricity
magnetism
friction
A student designs an experimental investigationto test the relationship between the height of the ramp and the distance a marble travels down the ramp. Which would be an oimportant rule to follow before beginning the investigation?
Wear gloves to protect hands.
locate the fire extinguisher.
get plan approved by teacher.
Properly dispose of materials.
A kickball is rolled toward home plate and kicked by a player. Which statement best ddescribes the movement of the ball?
The ball is pushed by both the pitcher and the kicker.
The ball is pushed by the pitcher and pulled by the kicker.
The ball is pulled by the pitcher and pushed by the kicker.
The ball is pulled by both the pitcher and the kicker.
students observe a pendulum and count the number of swings the pendulum makes in one minute. What tool do students need to conduct the investigation?
metric ruler
compass
prism
timing device
Sound is first caused by...
air
vibrations
instruments
movement
ALL sounds are made because of...
gravity
air particles
vibrations
heat
What causes sound to be heard?
something moving
A strong enough vibration
an object moving through the air
light energy
Which of these is NOT a medium of sound?
light
air
wood
metal
What is rapid (quick) back and forth movement called?
Pitch
Volume
Vibrations
Energy
The loudness of a sound is directly related to the wave's _____.
wavelength
frequecy
rest position
amplitude
The unit Hertz is used to measure the waves _______.
frequency
wavelength
loudness
amplitude
______________ of waves is measured in decibels. (dB)
frequency
pitch
wavelength
loudness
High pitch sound is the same with high frequency sound
true
false
When a man with low pitch sound screaming, what would the sound wave looks like?
There are a lot of waves, the waves are tall
There are a little waves, the waves are tall
There are a lot of waves, the waves are short
There are a little waves, the waves are short
Nina was hearing 3 sound this morning. First sound A (on the top) second is sound B (in the middle), third sound C (at the bottom). Which of those sound is the loudest?
A
B
C
None of them
In this picture which wave property is different ? (Notice that the number of waves is the same for each)
frequency
amplitude
Doppler Effect
diffraction
A soprano is a type of classical female singing voice and has the highest vocal range of all voice types. Which one one these wave is showing you a wave of a soprano singing aloud?
A
B
C
D
A bass is a type of classical male singing voice and has the lowest vocal range of all voice types. Which one one these wave is showing you a wave of a bass vocalist singing softly?
A
B
C
D
1. Sound is produced by (a)
2. Sounds can be ...........
loud and soft
loud
soft
none of the above
3. Trapping sound vibrations makes sound ....
softer
quiter
sound the same
louder
4. Small vibrations cause (a) sounds
5. Large vibrations cause (a) sounds.
6. Volume of a sound is ................
how loud the sounds is
how soft the sound is
how quiet the sound is
how loud or soft the sound is
7. We measure sound in units called .........
meter
centimeter
decibels
volume
8. What do we use to measure the volume of sounds?
A sound meter
A ruler
A microphone
A weighing scale
9. What sound source is the loudest?
a student whispering
silent place
a dog barking
a music concert
10. What sound source is softest?
Rainfall
door banging
kicking a ball
tapping your pencil softly
11. What medium does sound travel through slowest?
air
solid
liquid
tree
12. Sound does not travel in space because .........
Space is too far away
There is no matter in space
Space has planets
No one lives in space
13. What medium does sound travel fastest through?
air
gas
liquid
solid
14. Why is the school library covered with carpet?
So everyone can make a lot of noise
because it looks good
to help absorb sounds to keep it quiet
to help absorb sounds so it can stay noisy
15. Sound travels FASTEST through which of these materials?
water
milk
air
metal
The number of vibrations in a unit of time is called--
pitch
frequency
compression
wavelength
Which number on the diagram shows rarefaction?
1
2
3
4
Sound travels best through which form of matter?
Solid
Liquid
Gas
Plasma
A person will see a flash of lightening before they hear the roar of thunder because-
Light travels faster through the atmosphere than sound.
Sound travels faster through the atmosphere than sound.
The eye is quicker than the ear.
The thunder occurs much later than the lightening.
The highness and lowness of sound describes which vocabulary word?
wavelength
trough
pitch
frequency
Sound is a type of energy that is transmitted through-
light
heat
electrons
waves
Which of these materials transmits sound fastest?
water in a pool
a metal rod
air in a balloon
empty space
Sonar helps people find which information about an object?
weight
color
location
temperature
A student plans to investigate how sound changes when 4 bottles with different amounts of liquid are struck with a mallet. In which order must the bottles be placed so that the sound changes from a low pitch to a high pitch?
A,B,D,C
B,A,D,C
B,C,A,D
C,D,B,A
Blowing through a straw will produce a sound. Which straw will make the highest pitch?
The thinnest straw
The thickest straw
