Mass, Weight, and Simple Machines

Yes or No

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True False Quiz for 8th grade science

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Maria Casby

United States

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Mass, Weight, and Simple Machines


Mass, Weight, and Simple MachinesOnline version True False Quiz for 8th grade science by Maria Casby 1 The efficiency of a machine is always 100%. Yes No 2 Some energy is always lost as heat due to friction. Yes No 3 A seesaw has a fulcrum in the center, making it a lever. Yes No 4 A pulley changes the direction of the applied force. Yes No 5 Weight depends on the gravitational force acting on an object. Yes No 6 Mass is the amount of matter in an object, while weight is the force of gravity acting on mass. Yes No 7 A simple machine can decrease the total amount of work required. Yes No 8 Friction increases the efficiency of a simple machine. Yes No 9 Friction makes work easier. Yes No 10 A ramp increases the force needed but reduces the total amount of work done. Yes No 11 Weight is measured in Newtons. Yes No 12 An object on the Moon weighs less than it does on Earth because the moon has less gravity. Yes No 13 Mass depends on the gravitational force acting on an object. Yes No 14 Due to friction and energy loss, no machine is 100% efficient. Yes No 15 Power measures how quickly work is performed. Yes No 16 Work is done when an object moves in the direction of the applied force. Yes No 17 A wedge is a simple machine that is used to split objects apart. Yes No 18 A longer ramp makes lifting a heavy object harder. Yes No 19 On a different planet, the mass of an object remains the same, but weight changes depending on gravity. Yes No 20 A simple machine makes work easier but does not reduce the total work required. Yes No 21 Mass changes when an object moves to a different planet. Yes No 22 Friction reduces efficiency by converting some work into heat energy. Yes No 23 A screw is a modified inclined plane wrapped around a cylinder. Yes No 24 Friction generally makes work harder by opposing motion. Yes No 25 Lifting an object straight up requires more work than pushing it up a ramp. Yes No 26 An inclined plane reduces the amount of force needed to lift an object by spreading it over a greater distance. Yes No 27 A longer ramp reduces the force needed, though it increases the distance. Yes No 28 Mass and weight are the same. Yes No 29 Simple machines include levers, pulleys, wheels, and inclined planes. Yes No

Mass, Weight, and Simple Machines

Yes or No

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Created by

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Mass, Weight, and Simple MachinesOnline version

by Maria Casby

The efficiency of a machine is always 100%.

Some energy is always lost as heat due to friction.

A seesaw has a fulcrum in the center, making it a lever.

A pulley changes the direction of the applied force.

Weight depends on the gravitational force acting on an object.

Mass is the amount of matter in an object, while weight is the force of gravity acting on mass.

A simple machine can decrease the total amount of work required.

Friction increases the efficiency of a simple machine.

Friction makes work easier.

A ramp increases the force needed but reduces the total amount of work done.

Weight is measured in Newtons.

An object on the Moon weighs less than it does on Earth because the moon has less gravity.

Mass depends on the gravitational force acting on an object.

Due to friction and energy loss, no machine is 100% efficient.

Power measures how quickly work is performed.

Work is done when an object moves in the direction of the applied force.

A wedge is a simple machine that is used to split objects apart.

A longer ramp makes lifting a heavy object harder.

On a different planet, the mass of an object remains the same, but weight changes depending on gravity.

A simple machine makes work easier but does not reduce the total work required.

Mass changes when an object moves to a different planet.

Friction reduces efficiency by converting some work into heat energy.

A screw is a modified inclined plane wrapped around a cylinder.

Friction generally makes work harder by opposing motion.

Lifting an object straight up requires more work than pushing it up a ramp.

An inclined plane reduces the amount of force needed to lift an object by spreading it over a greater distance.

A longer ramp reduces the force needed, though it increases the distance.

Mass and weight are the same.

Simple machines include levers, pulleys, wheels, and inclined planes.