Pre-Assessment: Energy & Matter in Ecosystem

The sun has been up for several hours, and it has been shining on these trees. What can the trees do because they are in the sunlight? What does this mean for the number of energy storage molecules in the trees?

The trees can...

• give off carbon to the air. Giving off carbon allows them to make energy storage molecules.

• give off carbon to the air. Giving off carbon uses up energy storage molecules.

• take in carbon from the air. The carbon is used to make energy storage molecules.

• take in carbon from the air. The carbon is used to break down energy storage molecules.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS1-7

NGSS.MS-LS2-3

Drop Down: ​ (a)   makes up the non-living parts of an ecosystem, such as air, water, and rocks.

• Abiotic matter
• Biotic matter

Tags

NGSS.MS-LS2-3

These goats are eating grass on a sunny day. What is happening to the carbon in the air around the living things on the mountain? Is carbon moving into the air, moving out of the air, or both?

• Carbon is only moving into the air. It is not moving out of the air.

• Carbon is moving into the air and out of the air at the same time.

• Carbon is not moving into the air. It is only moving out of the air.

• With the information, there is no way to know for sure.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Scientists are studying photosynthesis in a forest ecosystem that has plants, animals, and decomposers (which consume/eat dead things). Which group or groups of organism in the forest carry out photosynthesis?

• All organisms

• Animals and decomposers

• Plants and decomposers

• Plants

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

A herd of deer lives in a forest where they eat leaves of trees. The number of energy storage molecules in the trees and in the deer has increased. What has happened to the amount of carbon in the trees and in the deer?

The amount of carbon in the trees and in the deer...

• has increased

• has decreased

• has not changed

• is not related to the number of energy storage molecules

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-1

NGSS.MS-LS2-3

The seagrass has had the sun shining on it for most of the day. What can the sea grass do because it is in the sunlight? What does this mean for the number of energy storage molecule in the sea grass?

The seagrass can...

• take in carbon from the air. The carbon is used to break down energy storage molecules.

• take in carbon from the air. The carbon is used to make energy storage molecules.

• give off carbon to the air. Giving off carbon allows the sea grass to make energy storage molecules.

• give off carbon to the air. Giving off carbon uses up energy storage molecules.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Drop Down: ​ (a)   matter that makes up the living and dead organisms in an ecosystem.

• Biotic matter
• Abiotic matter

Tags

NGSS.MS-LS2-3