Open and Closed Systems

Open systems like the oven allows energy to enter and leave

• True
• False

Tags

NGSS.MS-PS3-4

NGSS.MS-PS1-4

NGSS.MS-PS3-3

A ball is projected into the air. Where is potential energy the greatest?

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NGSS.HS-PS3-2

How does the mass of a bowling ball that has been rolled down the lane affect the kinetic energy?

• The kinetic energy does not depend on the mass of the bowling ball.

• The kinetic energy is increasing proportional to the mass of the bowling ball.

• The kinetic energy is decreasing proportional to the mass of the bowling ball.

• The kinetic energy is increasing proportional to the square of the mass of the bowling ball.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-1

Which point on the roller coaster's path represents the maximum potential energy?

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NGSS.MS-PS3-2

As a roller coaster goes downhill

• kinetic energy is converted into potential energy.

• potential energy is converted into kinetic energy.

• electrical energy is converted into potential energy.

• potential energy is converted into electrical energy.

Tags

NGSS.HS-PS3-3

Energy cannot be destroyed.

• True 
• False

Tags

NGSS.HS-PS3-2

Energy can be created.

• True
• False

Tags

NGSS.HS-PS3-3

NGSS.HS-PS1-8

Imagine dropping a basketball. When would it have the most gravitational potential energy?

• When it is closest to the ground
• When it is at the highest point
• When it is halfway down
• It has the same amount of gravitational PE at all points

Tags

NGSS.HS-PS3-2

The Law of Conservation of Energy states:

• Energy can created or destroyed but not transformed 
• Energy cannot be created or destroyed, it can only transformed
• Energy can't be created, destroyed or transformed

According to the Law of Conservation of energy, the amount of energy before and after a reaction must be the same. Which statement below is true?

• The total amount of energy is conserved
• The total amount of energy is less after a reaction
• The total amount of energy is more after a reaction

Tags

NGSS.HS-PS3-2

NGSS.HS-PS1-7

NGSS.HS-PS3-1