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WorksheetsForces and Energy
Total questions: 20
Worksheet time: 15mins
Which force would you most likely use to kick a ball?
twist
push
pull
upthrust
As the mass of an object increases, the force needed to move it:
decreases
increases
stay the same
works
When the force makes an object move, we say:
work is not done
work could be done
work is done
work is absent
An example of a lubricant is:
carpet
sandpaper
oil
wood
Friction can be a useful force:
when bobsleighing
when skiing
between parts in an engine
when braking
Energy is defined as the ability to:
do nothing
move
do work
change direction
The heat energy from the Sun is transferred by:
conduction
friction
radiation
convection
Heat energy is transferred in a gas or a liquid by:
conduction
convection
radiation
friction
Work is done when you are doing all of the following examples EXCEPT?
girl dancing ballet
children skipping
a tractor being pulled
playing baseball
Knowing that friction is a force that slows you down, you would...
choose a pair of sneakers with smooth soles to run a race.
tell your parents NOT to change their smooth tyres if they want to be able to get somewhere in a hurry.
advice someone to choose a boat that has the most tapered front to enter a boat race.
leave your parachute behind if you had to jump from a plane that was about to crash.
The dent in the side of a car after an accident, would...
change the size of the car.
change the shape of the car.
change the weight of the car.
was caused by a pulling force.
Joshua was having fun in the pool, he was lying on a plastic float filled with air. He was able to stay above the water; he does not sink because?
the float makes him weightless.
the float adds only a small amount to his weight.
the float increases his size so he is able to push away more water.
the upward force of the water pushing back is less than his weight.
If you are in a boat that is about to sink, which of the following items would you grab before jumping overboard to save yourself?
a large cardboard box.
a large wooden box.
a pillow stuffed with features.
a cast iron pot.
Gravity is defined as..
the force that pulls on things towards the Earth.
the force that pulls rockets into space.
the force that sweeps things away.
the force that keeps aeroplanes up in the air.
A girl found that her magnet would not pick up a pin. Which of the following is NOT a possible explanation?
The magnet was too weak.
The pin was too heavy.
The pin was made of tin.
The pin was made of iron.
Which of the following statements is NOT true?
A friction results when two things rub against each other.
Friction is not necessary.
Friction wastes energy and this requires extra forces.
Friction causes materials to wear out and become very hot.
Friction is a force that resists motion. You will find MOST friction while pulling a brick across what type of floor?
Tiled
Wooden
Unpaved
Carpeted
Why does a ball which rolled along the ground comes to a stop although nothing seems to be used to stop it?
The pull of gravity stops it from moving.
The force of friction stops it.
It was not pushed hard enough.
It was a very heavy ball
Ruth was having an issue opening her drawer, so she rubbed some petroleum jelly on the bottom of it. Why?
To increase the push on the drawer.
To reduce the friction between the drawer and the desk.
To reduce the push on the drawer.
To increase friction between the drawer and the desk.
Why do some objects sink when placed in water?
The effect of the water on them is greater than the effect of gravity.
They are big and have an effect on the water.
The effect of the water on them depends on their size.
The effect of gravity on them is greater than the effect of water.
