Food Webs - Worksheet 4
Grade 4•Science•Food Webs
Aligned to: 4-LS1-1
Answer the following questions about food webs.
1.
In a food web, grasshoppers eat grass, frogs eat grasshoppers, and snakes eat frogs. If a disease killed most of the frogs, what would likely happen to the snake population?
A.Snakes would increase
B.Snakes would decrease because they lost a food source
C.Snakes would not be affected
D.Snakes would start eating grass
2.
Why is a food web a more accurate model of an ecosystem than a single food chain?
A.Food webs are simpler to understand
B.Most organisms eat and are eaten by multiple species, not just one
C.Food chains show more connections
D.Food webs only include plants
3.
How is a food web different from a food chain?
A.A food web only has plants
B.A food web shows many connected food chains
C.A food chain is bigger
D.There is no difference
4.
What might happen if mice disappeared from a food web?
A.Nothing would change
B.Owls and snakes would have less food
C.Plants would die
D.The sun would stop shining
5.
What do the arrows in a food web show?
A.The direction animals move
B.The flow of energy
C.How fast animals run
D.Where animals sleep
6.
A food web is simpler than a food chain.
7.
Removing one species can affect the entire food web.
8.
Most animals eat only one type of food.