What is usually the last step of the scientific method?

• to test the hypothesis

• to collect data

• to draw conclusions

• to make observations

Which of the following can occur when an object is accelerating?

• it speeds up

• it slows down

• it changes direction

• all of the above

Tags

NGSS.MS-PS2-2

Which of the following changes when an unbalanced force acts on an object?

• inertia

• mass

• motion

• kinetic energy

Tags

NGSS.MS-PS2-2

An object is accelerated by a net force in which direction?

• at an angle to the force

• in the direction of the force

• in the direction opposite to the force

• any of these is possible

Tags

NGSS.MS-PS2-2

You are riding a bike. In which of the following situations are the forces on the bike balanced?

• you pedal to speed up

• you turn at a constant speed

• you coast to slow down

• you pedal at a constant speed in a straight line

The hands of a clock ________.

• have a constant velocity

• have no momentum

• constantly change speed

• are accelerating

The ________ is the SI unit for energy.

• watt

• joule

• ampere

• volt

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

The law of conservation of energy states that ________.

• energy is not created or destroyed and its form stays constant

• energy cannot be created or destroyed, only transformed or transferred

• the total energy of a system is less than it was before a change

• energy can be created or destroyed

Tags

NGSS.MS-PS3-5

Which of the following is a wedge?

• knife

• screw

• bottle opener

• wheelbarrow

When work is done, there is always a(n) _________.

• single movement involved
• constant rate
• transfer of energy
• increase in the mechanical advantage

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5