Energy Loss

In the energy pyramid here, how much of the energy in each level gets lost as heat or used by the organism for survival?

• 80%

• 90%

• 10%

• 20%

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

The efficiency of energy transfer from a lower trophic level to the next highest level is roughly

• 1%

• 10%

• 100%

• 1000%

Tags

NGSS.MS-LS2-3

If a primary producer has 1,000 Joules of energy, then how much energy would a primary consumer get?

• 100 J

• 10 J

• 1 J

• 10,000 J

Tags

NGSS.MS-LS2-3

How many calories will be passed on from 250 to the next trophic level?

• 2,500

• 25

• 2.5

• 10%

Tags

NGSS.MS-LS2-3

How can you best reduce the amount of electricity you use in your house?

• Turn off the radio.

• Unplug everything not being used.

• Turn off the lights.

• Turn the volume down on the TV

Tags

NGSS.MS-ESS3-3

How much energy is lost to the environment at each link in the ecosystem?

• 50%

• 80%

• 90%

• 100%

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Assuming that 100 J is received from grass when a grasshopper consumer it, how much energy is lost to the environment?

• 90 J

• 10 J

• 9 J

• 1 J

Tags

NGSS.MS-LS2-3

How much energy available at any one link in the food chain is passed on to the next link?

• 1%

• 10%

• 90%

• 100%

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

The law of conservation of energy states that energy cannot be created or destroyed only transferred. Based on the diagram, energy is transferred from coal (6000 Units) to the turbine (4500 units) and then onto the generator (4005 Units) ; then to the power polls (3950 Units). How much energy is “lost” from coal to turbine ?

• 4,500 units

• 1,450 units

• 150 units

• 1,500 units

Tags

NGSS.MS-PS3-4

There is some energy “loss” at the light bulb. The light bulb is an incandescent bulb. Incandescent bulbs work by having gas in a chamber and then heating a filament, or piece of wire. The hot filament turns red, gets hot, and reacts with the gas in the bulb to create light. What is the best way to decrease the energy “loss” in the light bulb?

• Use a different type of bulb, like a LED.

• Use a light bulb that uses less voltage.

• Use a light bulb that emits less light.

• Use a colored light bulb.

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

NGSS.MS-PS3-3