4th 6 weeks Test Food Chains, Energy Transformations

What kind of energy is stored in food?

• thermal

• mechanical

• chemical

• electrical

Tags

NGSS.MS-LS1-7

Energy stored in foods is _____________; digested food releases ___________ energy for movement and ________________ energy as heat.

• mechanical, thermal, chemical

• heat, mechanical, thermal

• radiant, thermal, mechanical

• chemical, mechanical, thermal

Plants get their energy from the Sun through photosynthesis. This energy is trapped in the bonds of the complex compounds the plants create from carbon dioxide and water. The plants are then eaten by animals, and the energy is used for heat and movement. Which of the following is an energy transfer that is conducted inside an animal in the above scenario?

• chemical energy to radiant energy

• chemical energy to mechanical energy

• radiant energy to chemical energy

• radiant energy to mechanical energy

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

NGSS.MS-LS1-7

Animals are consumers, meaning they need to eat food for energy because they cannot make their own. Which energy transformation is taking place when an animal eats food so it can keep warm?

• Radiant to chemical

• Chemical to thermal

• Mechanical to radiant

• Mechanical to thermal

Which of the following energy transformations occur when humans use energy from food to exercise?

• Chemical → mechanical → thermal

• Radiant → mechanical → thermal

• Thermal → electrical → mechanical

• Mechanical → thermal → chemical

Tags

NGSS.MS-PS3-5

A student prepares for a five-mile run so she eats a nutritious meal three hours before the run. Which correctly illustrates the transformation of energy from eating the meal to the five-mile run?

• Chemical → Mechanical → Thermal

• Mechanical → Thermal → Chemical

• Thermal → Mechanical

• Chemical → Thermal

Tags

NGSS.MS-PS3-5

A mountain biker is pedaling along a trail. What energy transformation is occurring during the ride?

• Kinetic → potential

• Electrical → chemical

• Chemical → mechanical

• Radiant → thermal

Use the desert food web to answer the following question:

How is this ecosystem MOST likely to be affected by a sudden decrease in the number of rats?

• There will be a decrease in the number of cacti and sagebrush plants.

• There will be an increase in the number of coyotes and hawks.

• There will be a decrease in the number of snakes, coyotes, and hawks.

• The snake population will increase.

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Use the grassland food web answer the following question.

How is this ecosystem MOST likely to be affected by an increase in the number of prairie dogs?

• The amount of grass will increase.

• There will be more food for mice.

• There will be more food for snakes.

• The number of hawks will decrease.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-2

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Organisms that breakdown organic material are called

• inorganic

• producers

• decomposers

• consumers