7.7a

Green plants use sunlight to make their own food in the form of glucose. This process, known as photosynthesis, is an example of which of the following energy conversions?

• Radiant energy to chemical energy

• Sound energy to radiant energy

• Chemical energy to mechanical energy

• Mechanical energy to thermal energy

Which of the following is an example of chemical energy being converted into mechanical energy in organisms?

• Animals convert the food they eat to muscle movement.

• The weathering of Earth's surface breaks down rock to make soil.

• Lightning strikes dry vegetation in an open field and causes a fire.

• Plants store energy collected from sunlight in sugar they produce.

Tags

NGSS.MS-LS1-7

When a plant performs photosynthesis, the radiant energy from the Sun is -

• transported into the soil through the roots

• used up in the process

• released into the atmosphere

• transformed into chemical energy

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

During digestion, which of the following energy conversions occurs?

• Chemical energy to heat energy

• Electrical energy to chemical energy

• Mechanical energy to heat energy

• Heat energy to chemical energy

Tags

NGSS.MS-PS3-5

List the steps of the scientific method

d

e

f

c

b

a

Draw conclusions

Form a hypothesis

Ask a question

Conduct experiment

Analyze results

Communicate results

Tags

NGSS.MS-LS1-5

A bird that eats seeds converts the energy stored in the seeds into the energy of its flight muscles. This conversion is from what kind of energy to what other kind of energy?

• Mechanical energy to thermal energy

• Chemical energy to mechanical energy

• Sound energy to radiant energy

• Radiant energy to chemical energy

Tags

NGSS.MS-PS3-5

Which of the following organisms regularly transforms radiant energy into chemical energy?

• grass

• cow

• deer

• human

Tags

NGSS.MS-LS1-6

The energy cows need to move about comes from the grass they eat. The energy in the grass is transformed from -

• mechanical energy to radiant energy

• radiant energy to chemical energy

• electrical energy to thermal energy

• chemical energy to mechanical energy

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

A girl eating an apple and then skateboarding exhibits what energy transformations?

• mechanical to thermal and chemical

• thermal to chemical and radiant

• chemical to mechanical and thermal

• radiant to chemical and mechanical

Tags

NGSS.MS-LS1-6

Mammals maintain a constant body temperature by converting –

• radiant energy to thermal energy

• chemical energy to electrical energy

• electrical energy to mechanical energy

• chemical energy to thermal energy

Tags

NGSS.MS-PS3-5