Energy in systems

A human changes chemical energy in to heat and ________.

• motion

• molecules

• light

• nuclear energy

Tags

NGSS.MS-PS3-5

What happens to energy within a system?

• it is used up

• it changes form

• it is increased

• it remains unchanged

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-4

NGSS.MS-PS3-5

The initial source for all energy in a food chain is

• plants

• the sun

• fruits

• herbivores

Long distance runners often eat special snacks partway through their run. What is most likely the reason for this?

• Their bodies do not convert chemical energy into motion energy very efficiently.

• They need to stay hydrated because they have sweated so much water out.

• They cannot eat before they run because it will make them sick.

• Much of the chemical energy in their bodies has been used up and must be replaced for them to continue working.

Tags

NGSS.MS-LS1-7

The chemical energy from plants is changed to ________ in animals.

• nuclear energy

• light and heat

• heat and motion

• sound

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What kind of energy does an organism receive from eating food?

• electrical

• solar

• chemical

• mechanical

Tags

NGSS.MS-LS1-7

What system changes light energy to chemical energy?

• car

• cat

• cannon

• a cabbage plant

Tags

NGSS.MS-LS1-6