MiSTAR 8.4 Lessons 1-4 Quiz Review

Newton's first law that says an object at rest will remain at rest unless acted upon by an unbalanced force is also called the law of ___.

• acceleration

• inertia

• action and reaction

• motion

Which is an example of an UNBALANCED force?

• A

• B

• Both A and B

• Neither A nor B

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A child sitting still on a chair is an example of which type of force?

• Balanced

• Unbalanced

• Gravitational

• Frictional

What type of force causes a ski to slide down a hill?

• Balanced

• Unbalanced

• Magnetic

• Elastic

Which statement below correctly describes why you don’t see books and pencils in the classroom pulled toward you due to the force of gravity? 

• There is no gravity in our classroom, so we cannot see evidence of gravitational forces.

• Objects as massive as a moon or planet exert gravitational forces, but smaller objects like people exert no gravitational forces.

• The gravitational force between any two objects is very weak unless one or both of the objects is very massive, like a moon or planet.

• Sometimes gravity pulls objects together and sometimes gravity pushes objects apart.

Tags

NGSS.MS-PS2-4

What is the NET FORCE on the box?

• 35N <-----

• 65N ---->

• 35N ---->

• zero

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Which has more Inertia? (you need more force to cause movement)

• truck

• ant

• cat

• skateboard

Tags

NGSS.MS-PS2-2

Jupiter has about 317 times more mass than Earth. What can you infer from this fact?

• Mass has no effect on gravitational force between 2 objects

• Jupiter’s gravitational force is much weaker than the Earth's gravitational force

• Jupiter’s gravitational force is equal to the Earth’s gravitational force

• Jupiter’s gravitational force is much stronger than Earth’s gravitational force

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Which of the following best explains how scientific models help us understand space more accurately?

• Models allow scientists to create exact replicas of planets that are exactly the same size as the real planets in space

• Models provide a simple way to help visualize complex ideas that would be difficult to observe directly

• Models are perfect copies of space that can be touched and held in our hands, making them identical to actual planetary systems

• Models are only useful for decorating classrooms and have no real scientific value in understanding space

Tags

NGSS.MS-ESS1-2

When there is NO force on an object, it...

• Moves slower

• Moves quicker

• Remains at rest