Energy Flow in Ecosystems

What does the law of conservation of matter state?

• Matter can be created and destroyed

• Matter can neither be created nor destroyed

• Matter is always created

• Matter is always destroyed

Tags

NGSS.MS-PS1-5

Where do plants get matter from?

• Only from the air

• Only from the soil

• From the air and the soil

• Only from water

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What factors impact the size and scope of a food web in an ecosystem?

• Temperature and humidity

• Water and nutrients

• Soil type and altitude

• Wind and precipitation

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What limits primary producers in a desert ecosystem?

• Lack of sunlight

• Lack of water

• Lack of nutrients

• Lack of space

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

What is the term for the diagram that shows energy flow in an ecosystem?

• Food web

• Trophic pyramid

• Energy cycle

• Nutrient cycle

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What is the main source of energy for most ecosystems?

• Water

• Soil

• Sun

• Air

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What percentage of energy is typically transferred from one trophic level to the next?

• 50%

• 25%

• 10%

• 1%

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Why do we have fewer tertiary consumers than producers in an ecosystem?

• Energy is created at each level

• Energy is stored at each level

• Energy is lost at each level

• Energy is gained at each level

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3