Review Forces, Chemical Changes

Which has a STRONGER force of gravity, the Earth or the Moon?

• Earth

• Moon

Tags

NGSS.MS-PS2-5

NGSS.MS-PS2-4

What two things determine the gravity of an object?

• mass & weight

• mass & distance

• density & mass

• volume & distance

Tags

NGSS.MS-PS2-4

When will the forces of gravity between two objects be the GREATEST?

• when the masses of both objects are small and the objects are far apart

• when the masses of both objects are large and the objects are close together

• when the masses of both objects are small and the objects are close together

• when the masses of both objects are large and the objects are far apart

Tags

NGSS.MS-PS2-4

Which model has greater gravitational attraction.

• Model A

• Model B

• Model A and B have the same amount of gravitational attraction.

Tags

NGSS.MS-PS2-5

NGSS.MS-PS2-4

NGSS.MS-ESS1-2

Rougher surfaces have ...

• greater friction
• less friction
• the same level of friction

Friction is a force that acts in an ___________ direction of movement.

• similar
• opposite
• parallel
• west

If the type of surface is smoother, the distance traveled by the toy car will be___________________

There are deep treads on the tyre because they ___________.

• increase the stopping distance of the car

• reduce the amount of material used

• increase friction

Tags

NGSS.MS-ETS1-3

Friction produces _____________ to keep ourselves warm or to start a fire.

• heat

• heart

• helium

• hexagon

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

Magnetism is a force of ____________________________ that occurs between two _____________ objects.

• attraction or repulsion, magnetic

• external or internal, magnetic

• external or repulsion, electronic

• attraction or internal, electronic

Tags

NGSS.MS-PS2-5

NGSS.MS-PS2-3