Using Machines Quizizz

What is a machine?

• A device that makes doing work easier

• A tool that complicates tasks

• A system that increases workload

• A gadget that requires no energy

What is a simple machine?

• Made with many moving parts

• Made with few or no moving parts

• A device that requires electricity

• A complex system of gears

Which of the following is an example of a compound machine?

• Lever

• Ramp

• Scissors

• Pulley

What is the relationship between the upward force and the downward force in a car jack?

• Upward force is less than downward force

• Upward force is equal to downward force

• Upward force is greater than downward force

• Upward force is not related to downward force

Tags

NGSS.MS-PS2-1

What is the term for the force applied to a machine?

• Output force (F_out)

• Input work (W_in)

• Input force (F_in)

• Output work (W_out)

Which of the following describes the force applied by a machine?

• Input force (F_in)

• Output force (F_out)

• Input work (W_in)

• Output work (W_out)

What does input work (W_in) refer to?

• Work done by the machine

• Force applied by the machine

• Work done on the machine

• Force applied to the machine

When a machine does work on an object, what happens to the energy?

• Energy is transferred from the object to the machine

• Energy is lost

• Energy is transferred from the machine to the object

• Energy is stored in the machine

Tags

NGSS.MS-PS3-5

Why does a machine never transfer all of its energy to an object?

• Energy is always conserved

• Some energy is lost to sound

• Some energy is transferred to thermal energy due to friction

• Machines are inefficient

In an ideal machine, what happens to the input work?

• It is lost as heat.

• It is converted to thermal energy.

• It equals the output work.

• It is greater than the output work.

Tags

NGSS.MS-PS3-5