WorksheetsForces Review 3
Total questions: 30
Worksheet time: 17mins
Magnetic force can cause
push only
pull only
a push or a pull
no change in motion at all
Objects must touch to be affected by magnetic force.
True
False
What interaction will occur between the magnets in the arrangement shown?
The magnets will attract each other.
The magnets will repel each other.
The magnets will both attract and repel each other.
The magnets will not interact at all.
Which of the following relationships between distance and magnetic force is correct?
increased distance = increased magnetic force
decreased distance = decreased magnetic force
increased distance = decreased magnetic force
There is no relationship
The needle in a compass aligns with
nothing. It has its own power source.
the geographical North pole.
the Sun's gravitational force.
the Earth's magnetic field.
What interaction will occur between the magnets in the arrangement shown?
The magnets will attract each other.
The magnets will repel each other.
The magnets will both attract and repel each other.
The magnets will not interact at all.
Two bar magnets are held close together. They are released and allowed to move freely. The bar magnets quickly come together. Which best explains why this happens?
The poles facing one another are both south poles
The poles facing one another are both north poles
The poles facing one another are opposite poles
One magnet was bigger than the other
What is this image showing.
Electric Current
An Electromagnet
Magnetic Force
Magnetic Field
If negative charge is developed on two objects they will__
attract each other
repel each other
Same charges _____ each other
repel
attract
Opposite charges _______ each other
repel
attract
This is what happens to an object when the gravitational force is stronger than the buoyant force.
sinks
floats
neutrally buyant
I don't know...
This is what happens to an object when the buoyant force is stronger than the gravitational force.
sinks
floats
neutrally buyant
I don't know...
If we place an empty sealed plastic bottle in water, we know it will float. What could we do to make it sink?
You can't make a plastic bottle sink
Increase mass (fill it with coins)
Fill the bottle with helium
Decrease mass (use a bottle made out of lighter plastic)
If an object, such as a ball of clay sinks, what would we need to do to its volume to make it float?
Clay can't float
Increase the volume
Decrease the volume
Keep the volume the same
Which properties affect buoyancy?
(select all that apply)
Mass
Volume
Density
Luster
Does saltwater make an egg float or sink?
Sink
Float
What is displacement?
The ability to float
Degree of compactness of a substance
The moving of something from its place or position
What is density?
The ability to float
Degree of compactness of a substance
The moving of something from its place or position
A ball full of air floats more than a rock because...
It is less dense than the rock
It is more dense than the rock
The amount of matter in an object is ____.
mass
volume
density
buoyancy
Airbags absorb the inertia of your body in a crash by increasing the __________ it takes to slow your body down.
Time
Pressure
Acceleration
Momentum
__________________ are used to safely decrease the momentum of a CAR (*not only the person).
Airbags
Crumple zone
Seatbelts
Headrest
Breaks
Some safety features are designed to increase the time of a collision because this reduces the maximum force.
True
False
A longer stopping distance means you will feel more force.
True
False
