Energy Transfers and Transformations

This type of energy uses falling/ running water to generate electricty.

• wind

• hydroelectric

• geothermal

• fossil fuels

What energy transformation occurs when I eat food & it gives my body the energy to run.

• nuclear --> thermal

• mechanical --> chemical

• chemical --> mechanical

• thermal --> nuclear

Tags

NGSS.MS-LS1-7

A system that does not exchange energy or matter with the environment

• open system

• left system

• closed system

• right system

This graph MOST LIKELY describes the potential energy and kinetic energy of a roller coaster going

• up a hill.

• up a hill and then rolling back down the other side.

• down a hill.

• down a hill and then rolling back up the other side.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

A ball is projected into the air. Describe the change(s) in potential and kinetic energy.

• Potential energy decreases and kinetic energy increases.

• Kinetic energy increases and potential energy decreases.

• Potential energy decreases while kinetic energy increases; then kinetic energy decreases and potential energy increases.

• Kinetic energy decreases as potential energy increases; once at the top, potential energy decreases as kinetic energy increases.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

The rock in the picture is pushed over the edge and it begins to fall. Which type of energy conversion is taking place?

• potential to kinetic

• sound to mechanical

• mechanical to heat

• kinetic to potential

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2

NGSS.MS-PS3-5

Which graph BEST shows the relationship of kinetic energy to potential energy as a book sits on the edge of a desk?

• A

• B

• C

• D

Tags

NGSS.MS-PS3-1

Which graph BEST shows the relationship of kinetic energy (solid line) to potential energy (dotted line) as a hawk dives downward toward its prey and then returns to its original position in the air?

• 
• 
• 
• 

Tags

NGSS.MS-PS3-1

Instead of rolling down the ramp over the step, imagine the ball falls off the back of the ramp directly to the ground. What is the amount of potential energy remaining after the ball lands on the ground?

• 100J

• 0J

• 25J

• 50J

Tags

NGSS.MS-PS3-2

Which point on the pendulum's swing represents the minimum potential energy?

• A

• B

• C

• D

Tags

NGSS.MS-PS3-2