Worksheets7th grade Science Trimester 2 review
Total questions: 20
Worksheet time: 10mins
Which of the following is true of solids. (You may pick more than one answer.)
Atoms in a solid are tightly packed together.
Atoms in a solid move very quickly.
Atoms in a solid have little energy.
Atoms in a solid do not move at all.
When gaseous water turns into liquid water, which of the following are true? (You may chose more than one answer.)
The water molecules lose energy.
The water molecules gain energy.
The water condensed.
The water evaporated.
What is true of freezing? (You may chose more than one answer.)
Liquid turns to gas.
Solid turns to liquid.
Liquid turns to solid.
Thermal energy is lost.
Thermal energy is gained.
Select the true statement about the picture.
They will push apart because opposite poles repel.
They will pull together because opposite poles attract.
They will push apart because like poles repel.
They will pull together because like poles attract.
Which of the following is true about gravity?
Gravity attracts and repels.
Gravity only attracts.
Gravity only repels.
Gravity always pulls everything down.
Which of the following it true about the law of universal gravitation? (You may chose more than one answer.)
Only very large objects exert a gravitational force.
Every object in the universe exerts a gravitational force.
The larger the mass of an object, the stronger the gravitational force.
The small the mass of an object, the stronger the gravitational force.
The larger the distance between two objects, the weaker the gravitational force.
Which of the following pictures shows the interaction of 2 charged objects? (You may chose more than one answer.)
This picture shows a ball on different stairs. E shows the ball after rolling down a ramp from the top stair. F shows the ball falling off the top stair. Which of the following is true?
F has more kinetic energy than C.
F has more kinetic energy than E.
F has less kinetic energy than C.
F has less kinetic energy than E.
This picture shows a ball on different stairs. E shows the ball after rolling down a ramp from the top stair. F shows the ball falling off the top stair. Which of the following is true?
C has more gravitational potential energy than D.
C has more gravitational potential energy than A.
C has more gravitational potential energy than B.
C has less gravitational potential energy than E.
A pendulum comes to a stop because...
...its energy is lost.
...it transfers its energy to the air particles.
...it gets tired.
...it stores the energy to use later.
Which of the following is true?
Objects that have higher temperatures have less kinetic energy.
Objects that are cold have no kinetic energy.
Objects that have higher temperatures have more kinetic energy.
Objects that have lower temperatures have more kinetic energy.
Which of the following is true?
Thermal energy always flows from hot to cold.
Thermal energy always flows from cold to hot.
Thermal energy sometimes flows from hot to cold.
Thermal energy sometimes flows from cold to hot.
Which of the following is true about kinetic energy? (You may chose more than one answer.)
An object with less mass will have more kinetic energy.
An object with more mass will have more kinetic energy.
An object with a faster speed will have more kinetic energy.
An object with a slower speed will have more kinetic energy.
Which of the following is true about strength of an electric force? (You may chose more than one correct answer.)
Objects that are bigger have more electric force.
Objects that have bigger charges have more electric force.
Objects that are closer have more electric force.
Objects that are moving faster have more electric force.
How does the distance between objects affect the strength of the force?
Distance does not affect the strength of the force.
When distance increases, the strength of the force increases.
When distance decreases, the strength of the force increases.
Distance only affects the strength of magnetic force.
Select the true statement(s) below.
The larger the mass of the objects, the stronger the gravitational force is.
Size has no effect on the strength of a magnet's force.
The more electrical charge an object has, the stronger it's electrical force is.
To increase the strength of the electrical force of a balloon, rub it more on a woolen sweater.
Which of the following are true about conduction?
The thermal energy flows in a current.
A conductor is a material that passes thermal energy quickly and easily.
An insulator is a material that passes thermal energy quickly and easily.
Thermal energy is transferred when particles bump into each other.
Which of the following are examples of radiation?
The sun heating up the sidewalk
A heat lamp keeping a tortoise warm
Roasting a marshmallow near a fire
Warming up your hands by holding a mug of hot cocoa
Floating ice cubes cooling down an entire glass of lemonade.
Which of the following are examples of convection?
Roasting marshmallows near a fire
Floating ice cubes cooling down an entire glass of lemonade
A pot of boiling water
Heating vents installed near the floor
Warming up your hands by holding a mug of hot cocoa
Which best describes the energy transformations occurring when you apply the brake on your bicycle?
(Hint: Think about how a brake works.)
kinetic -> potential
potential -> kinetic
mechanical -> thermal
kinetic -> electromagnetic
