Mass, Weight, and Simple Machines

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True False Quiz for 8th grade science

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Maria Casby

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Mass, Weight, and Simple Machines


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

Mass, Weight, and Simple Machines

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OPEN UP 5 UNIT 3: THERE IS/ARE, THERE WAS, THERE WERE

Mass, Weight, and Simple MachinesVersión en línea

por Maria Casby

A longer ramp makes lifting a heavy object harder.

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

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

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

Friction makes work easier.

Mass depends on the gravitational force acting on an object.

Weight depends on the gravitational force acting on an object.

Weight is measured in Newtons.

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

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

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

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

Friction increases the efficiency of a simple machine.

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.

A pulley changes the direction of the applied force.

The efficiency of a machine is always 100%.

Some energy is always lost as heat due to friction.

Friction reduces efficiency by converting some work into heat energy.

Power measures how quickly work is performed.

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

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

Friction generally makes work harder by opposing motion.

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

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

Mass and weight are the same.

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

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

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