Energy Conversions

The energy conversion in a flashlight is _____________ ->_____________-> light + thermal energy

• chemical energy > electrical energy

• electrical energy > chemical energy

• Neuclear energy > chemical energy

• gravitational potential energy > kinetic energy

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-3

The energy conversion process in a neuclear powerplant is ---> ___________ > ___________ > __________ > electrical energy

• Thermal energy > Nuclear energy > kinetic energy

• Neuclear energy > thermal energy > kinetic energy

• graviational potential energy > kinetic energy > thermal energy

• neuclear energy > kinetic energy > thermal energy

Tags

NGSS.HS-PS3-3

NGSS.HS-PS3-4

what is the law of conservation of energy

• energy can be created but cannot be destroyed

• energy cannot be created or destroyed, but it can be transformed

• energy can be destroyed but not created

• energy cannot be created destroyed or transformed

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-4

what is the energy conversion in a hydroelectric power station?

• gravitational potential energy > kinetic energy > electrical energy

• kinetic energy > thermal energy > electrical energy

• gravitational potential energy > thermal energy > electrical energy

• thermal energy > kinetic energy > electrical energy

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-3

what is the energy conversion happening between a plant and the sun during photosynthesis?

• Solar energy > kinetic energy

• Solar energy > nuclear energy

• Solar energy > Chemical energy

• Light energy > Chemical energy

Tags

NGSS.HS-LS1-5

A person is putting 160 J of energy into peddling a bike. The bike is going at a speed of 4.00 m/s. The total mass of the person and the bike is 70.0kg. What is the efficiency of the bike?

• 87.5%

• 88%

• 78.5%

• 87%

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-3

what kind of energy conversion(s) happen in an electric stove?

• electrical energy > thermal energy

• nuclear energy > electrical energy > thermal energy

• chemical energy > thermal energy

• chemical energy > electrical energy > thermal energy

Tags

NGSS.HS-PS3-4

a machine that is 20% efficient has 50 J of energy put into it. What is the output of energy?

• 15J

• 10J

• 10.0J

• 10

Tags

NGSS.HS-PS3-1

what type of reaction happens in the sun?

• nuclear fission

• nuclear fusion

• nucelar friction

• spontaneous combustion

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

what type of energy conversion is happening when a person jumps out of a plane?

• gravitational potential energy > kinetic energy

• kinetic energy > gravitational potential energy