8th Grade Science Final Fall 2019

What is a force?

• a push or pull
• speed or acceleration 
• potential or kinetic energy
• balanced or unbalanced force

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

What is the force that causes everything to be pulled down to the Earth?

• friction
• gravity
• balanced
• unbalanced

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

What is a force that works AGAINST MOTION?

• Force
• Motion
• Gravity
• Friction

Tags

NGSS.3-PS2-1

If these boys are pulling with the same amount of force.  What will happen?

• The boy in blue will win.
• They will not move at all.
• The boy in red will win.
• Both will fall down.

Tags

NGSS.MS-PS2-1

What pulls a ball back to earth?

• Gas
• Gravity
• Friction
• Molecules

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

An automobile you are riding in suddenly stops, why does your body continue to go forward?

• An object in motion stays in motion.

• Gravity pulls your body towards the earth.

• Friction makes your body slow down.

Tags

NGSS.MS-PS2-2

If a magician pulls a table cloth from under a table of dishes, what should happen based on Newton's 1st law?

• The dishes will stay in place on the table.

• The dishes will fall to the ground.

• The dishes will accelerate and then slow down.

Tags

NGSS.MS-PS2-2

It is much more difficult to move a dresser full of clothes than an empty dresser. Why?

• An object in motion stays in motion.

• It takes more force to move an object with more mass.

• It takes more friction to move the empty dresser.

Tags

NGSS.MS-PS2-2

What is Newton's First Law

• F=ma
• Every action has an equal and opposite reaction
• An object at rest stays at rest, an object in motion stays in motion. 
• Friction 

Pushing a child on a swing is harder than pushing an adult on the same swing.

• True

• False

Tags

NGSS.3-PS2-1