Unit 3 & 4 Review

In the absence of air, a penny and a feather that are dropped from the same height at the same time will

• Fall at the same time

• The feather will fall faster

• The feather will fall slower

• The penny will fall faster

Tags

NGSS.3-PS2-2

NGSS.5-PS2-1

Objects that are falling toward Earth in free fall move

• faster and faster (9.8 m/s2)

• at a constant velocity (9.8 m/s2)

• slower and slower(-9.8 m/s2)

• slower then faster

Tags

NGSS.MS-PS2-4

What does heliocentric mean?

• Sun centered

• Earth centered

• Mars centered

• Saturn centered

Tags

NGSS.MS-ESS1-1

Kepler’s First Law states:

• the sun is the center of the solar system.

• planets orbit the sun in elliptical orbits, with the sun located at one focus.

• planets orbit the sun in circular orbits, with the sun located at the center.

• gravity provides the force that holds the planets in orbit about the sun.

Which of the following statements is correct about weight and mass?

• Mass and weight both vary with location.

• Mass varies with location, but weight does not.

• Weight varies with location,but mass does not.

• Neither mass nor weight varies with location.

The two things that affect the force of gravity are:

• Mass and Momentum

• Mass and distance

• Mass and volume

• Mass and time

Tags

NGSS.MS-PS2-4

Impulse is defined as what?

• Mass in motion

• The capacity to do work

• Mass times acceleration

• Change in momentum takes time and force

Tags

NGSS.HS-PS2-2

What is the difference between an inelastic collision and a perfectly inelastic.

• They are the same

• Inelastic has no movement while perfectly inelastic does

• Inelastic separate slightly after the collision while perfectly inelastic the objects stick together after the collision

• Inelastic they bounce off into separate directions while perfectly inelastic just means that it is a perfect collision.

Tags

NGSS.HS-PS2-2

NGSS.HS-PS2-3

What is an elastic collision?

• I don’t remember

• The objects separate after the collision

• The objects get embedded in one another after the collision

• They don’t bounce off each other but use that force to stop

Tags

NGSS.MS-PS3-5

What does the conservation of momentum state?

• Momentum does not change

• Momentum changes

• Momentum is created

• Momentum is destroyed

Tags

NGSS.HS-PS2-2