MS-PS2-3 and MS-PS2-5

An airplane is travelling North through the sky at a constant speed when turbulence causes it to take a different route, changing its direction. Explain the forces at work on this plane.

• Unbalanced, because the plane is moving forward, not backwards

• Unbalanced, because the speed is constant and there is a change in direction

• Balanced, because the plane is not falling to a lower altitude

• Unbalanced, because the plane is in motion

Tags

NGSS.MS-PS2-2

A weight hung from a fixed point is called a

• prediction

• observation

• pendulum

• mass

Tags

NGSS.MS-PS2-4

According to Newton's second law, the law of acceleration, it takes more force to accelerate a bowling ball than a soccer ball since a bowling ball has:

• Less Mass

• More Mass

• More Inertia

• Less Inertia

Tags

NGSS.MS-PS2-2

Which best describes the speed of a ball as it is thrown straight up into the air and comes back down?

• The ball goes up at a constant speed, stops, then comes down at a constant speed.

• The ball goes up at a constant speed, stops, and increases speed as it comes down.

• The ball goes slower and slower as it goes up, stops, and then goes faster and faster as it comes down.

• The ball goes slower and slower as it goes up, stops, and then comes down at a constant speed.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Two girls tie a rope to a heavy rock. One girl cannot lift it by herself. Another girl puts the rope over a bar, and together they are able to lift the rock. Why does this work?

• The force of gravity on the object is greater than the force of gravity on the rope.

• The force of gravity on the rope is greater than the force of gravity on the object.

• The force of the girls pulling is greater than the force of gravity on the object.

• The force of gravity on the object is greater than the force of the girls pulling.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What is a PUSH or PULL of an object?

• Motion

• Force

• Friction

• Gravity

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

These forces are...

• Balanced

• Unbalanced

Two cars are in motion for the same amount of time. What will determine which car covers more distance?

• the starting position of the each car

• the speed of each car

• the direction in which each car moves

• the length of the car

Tags

NGSS.MS-PS3-1

The chains on a swing pull back on the swing while gravity pulls it down. The swing keeps moving back and forth because the forces are ________.

• strong

• weak

• balanced

• unbalanced

Tags

NGSS.MS-PS2-2

Students want to study how water waves move in their classroom. Which of the following is the most important feature in the design of their investigation?

• Getting salt to dissolve in water

• Always using the same amount of water

• Making water move in regular patterns

• Building scale models of boats

Tags

NGSS.MS-PS4-1