Review for 2 nd six weeks Common Assessment 6 th Grade.

Review for 2nd six weeks Common Assessment

6th Grade

Describe the energy conversions that take place in a hair dryer.

Electrical to kinetic, thermal and sound

Describe the energy conversions in a battery.

Chemical into electrical

Describe what happens during photosynthesis.

The plants use light energy to produce new substances with chemical energy.

What is the best definition of energy?

Energy is the ability to do work.

What is a producer?

Is the 1st organism in a food chain

What is a herbivore?

They eat only plants

What is an omnivore?

They eat both (plants and animals).

What is a carnivore?

They eat other animals.

What would happen if all the carnivores were removed from an ecosystem?

The herbivore population would increase

Describe the correct energy transformations in a working toaster.

Electrical to thermal

What type of energy do apples provide when they are eaten?

Chemical energy

Food chain:Shows the flow of energy as

each organism eats the one below it

Food Web:Shows that energy flows in

many directions through an ecosystem.

Describe the energy conversions that takes place in a solar heating system used to warm up a building.

Light energy to thermal energy

Examples of conversions from chemical energy to thermal energy

– Food is digested to regulate body temperature.

– Charcoal is burned in a barbeque pit.– Coal is burned to boil water.

Roller Coaster:

Greatest Potential Energy at the top of the biggest hill.

Greatest kinetic energy at the bottom of the biggest hill.

Renewable Resources:•Solar

•Water

•Wind

•Geothermal

•Biomass

Nonrenewable resources:–FOSSIL FUELS (FFCON)

•Coal

•Oil

•Natural Gas

•Nuclear Energy

The energy in coal can ultimately be traced to____.

The sun

What percent of the United States energy use comes from fossil fuels?–About 80%

Nuclear energy:

– Is generated when the nucleus of a radioactive element splits.

Trees are part of the renewable resources

Energy Pyramid:

Energy is ____ at the higher levels of the energy pyramid.

•lost

Energy flows from the grass to ________.