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WorksheetsChapter 4 Science
Total questions: 15
Worksheet time: 30mins
Why do chipmunks in the Great Smoky Mountains survive? (pg.111)
Their needs are met in that environment.
They have driven out all the other chipmunks.
Humans feed them, which helps them survive.
Humans have moved them from cities to the mountains.
Which describes a balanced ecosystem? (pg. 112&113)
There is enough food for people to eat.
One type of animal and plant depend on each other.
No animal or plant drives out other animals or plants.
Human create shelter and food for animals and plants.
How do these organisms' interactions help balance their ecosystem? (pg.112)
Rabbits make homes in grass.
Grass and rabbits both need oxygen.
Grass makes oxygen, rabbits use it.
Grass depends on rabbits to protect it.
A meadow has too many rabbits. What would help balance out the ecosystem? (pg. 112)
more rain that grass needs
more foxes that eat rabbits
fewer foxes that eat rabbits
more grass for rabbits to eat
How would an ecosystem change if the rabbits (the main food for foxes) died? (pg.114)
The foxes would find new prey.
The number of foxes would increase.
The number of foxes would decrease.
The foxes and rabbit would compete for food.
What impact does a parasite have in an ecosystem? (pg.117)
helps the entire ecosystem
hurts one organism and helps another
helps both the host organism and parasite
hurts both the host organism and parasite
What does this illustration show? (pg. 118&119)
succession
parasites and hosts
pioneer communities
competition between consumers
Which would cause an ecosystem to change quickly? (pg. 122)
an earthquake
a lake drying up
a climate change
a lake becoming a marsh
What might be the effect on an ecosystem of a climate change from rainy to dry? (pg. 118&119)
no change
a change from plants to animals
a change from a forest to marsh
a change in kinds of plants and animals
What could scientists tell from a fish fossil found in a desert? (pg121)
That fish is now extinct.
Fish once had legs to travel.
Fish once lived in dry places.
The desert was once a lake or sea.
What might be a reason an animal becomes extinct? (pg.120)
It is a predator.
It produces oxygen.
Its habitat is destroyed.
It adapts to its environment.
How are a hawk and an owl able to succeed, even though they compete for food? (pg.115)
The hawk eats the owl.
The owl changes its diet.
One animal moves to a different habitat.
One hunts at night, the other hunts during the day.
What is one way people can disturb the balance of ecosystems? (pg.124)
breathing air
planting trees
riding bikes
building houses
How can damage from strip mines be replaced? (pg.127)
Erosion can fill the hole.
Mining companies can replace the soil.
Rain can wash the rock away.
Mining companies can mine in another place.
Why did the United States establish national parks?
to make money
to provide great vacation spots
to preserve nature's beauty and habitats of plants and animals
to give American's a chance to see something new
