7th grade first semester review

Force exerted between the surfaces of two objects. 

• Friction
• Inertia
• Force
• Gravity

Tags

NGSS.MS-PS2-1

Push or Pull is a.....

• Friction

• Inertia

• Force

• Gravity

A magician pulls a tablecloth out from under dishes and glasses on a table without disturbing them.

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law

Tags

NGSS.MS-PS2-1

Rockets are launched into space using jet propulsion where exhaust accelerates out from the rocket and the rocket accelerates in an opposite direction.

• The Law of Inertia
• The Law of Acceleration
• The Law of Conservation of Momentum

Tags

NGSS.MS-PS2-1

Pushing a child on a swing is easier than pushing an adult on the same swing, because the adult has more mass and requires more force to accelerate.

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law

Tags

NGSS.HS-PS2-1

This person bought coffee and put it on the seat next to them. If they stopped quickly and the coffee spilled which law would that represent?

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law

Tags

NGSS.HS-PS2-1

When you step on a Lego. You push on the Lego and the Lego pushes back on you.

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law

Tags

NGSS.MS-PS2-1

When two equal forces act in opposite directions on an object, they are called ______________________.

• frictional force

• balanced force

• centripetal force

• gravitational force

When an unbalanced force acts on an object, the force ______________________.

• changes the motion of the object

• is cancelled by another force

• does not change the motion of an object

• is equal to the weight of the object

Tags

NGSS.MS-PS2-2

According to Newton’s second law of motion, force is equal to mass times ______________________.

• inertia

• weight

• acceleration

• direction

Tags

NGSS.MS-PS2-2