Mass, Weight, and Simple Machines

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

Mass, Weight, and Simple Machines

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Mass, Weight, and Simple MachinesVersion en ligne

par Maria Casby

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

Mass changes when an object moves to a different planet.

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

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

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

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

Friction generally makes work harder by opposing motion.

Mass depends on the gravitational force acting on an object.

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

A pulley changes the direction of the applied force.

Friction increases the efficiency of a simple machine.

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

Weight is measured in Newtons.

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

Some energy is always lost as heat due to friction.

Mass and weight are the same.

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

Friction reduces efficiency by converting some work into heat energy.

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

A longer ramp makes lifting a heavy object harder.

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

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

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

Power measures how quickly work is performed.

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

The efficiency of a machine is always 100%.

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

Friction makes work easier.

Weight depends on the gravitational force acting on an object.