WorksheetsEnvironmental Change
Total questions: 25
Worksheet time: 25mins
________can be caused by a natural event like lightning, and also by people.
Floods
Forest Fires
Droughts
Which is one negative effect of fires?
Fires clear space for new plants growth
Pinecones open to let their seeds out
Fires destroy trees and other plants as well as animal habitats
Is when small pieces of rock are carried away by water and sometimes by wind.
flood
erosion
drought
It occurs when it does not rain for a long time. It forces people and animals to look for new places to live.
fires
flood
drought
What led to this environmental change?
Human Activity
Natural Process
Lion with big teeth
True or false: Trees help cool the planet by absorbing carbon dioxide as part of the photosynthesis process and by evaporating water into the air.
True
False
What kind of environment change is this?
Long term
Short term
How do beavers change the environment?
they build mounds
they release poison
they build dams
They caus flame, heat, smoke, and ash, as a result they can change ecosystems:
erosion
fire
flood
How do termites change ecosystems?
building dams
releasing poison
building mounds
Where there is not enough rain, _____________ can hurt crops.
drought
flood
erosion
A change in the environment can cause an animal to lose its ________________
color
habitat
adaptation
It causes rivers to rise higher and higher:
erosion
drought
flood
One positive effect of _________ is that some pinecones only open after being heated.
fires
erosion
drought
If humans cleared a forest to build homes, we would expect _____________.
fewer tree-dwelling animals
increased insect populations
more development of soil
more frequent thunderstorms
In which example does a nonliving factor affect an ecosystem?
Insects destroy most of the trees in the forest
A tornado uproots many trees in a neighborhood
A beaver uses trees it cuts down to build a dam on a river
People cut down trees to clear land for building homes.
How will the construction shown above most likely effect the environment?
Animals in different parts of the ecosystem will be separated
Habitats on both sides of the road will be damaged by flooding
Plants will stop growing in the cleared ground
Populations of predators will increase in this region.
The nesting habits of four types of birds are above. If all the dead branches and dying trees in a wooded area are removed, which bird's nesting habit would be most affected?
Baltimore Oriole
Barn Swallow
Downy Woodpecker
Belted kingfisher
Which of the following would most likely result in a decrease in the population of insect-eating birds that build their nest on trees?
Overhunting of animals that prey on birds
Observation of birds by scientist
Introduction of a new type of insect
Clearing of forests to build a highway
trees are cut down in large numbers to clear the land; this can lead to erosion and loss of soil
impact
restore (restoration)
deforestation (clear cutting)
invasive species
problem that occurs when grazing animals like cattle and sheep eat too much vegetation (grass)
habitat
overgraze
thrive
global warming
What is a drought?
Not enough rain
Too much rain.
Too much people using water
Strong winds
What would cause a decrease in the rabbit population?
An increase in grass growing
A decrease in caterpillars
An increase in owls
An increase in fox
What would happen if the mouse population went extinct?
The Kestrel (Hawk) population would increase
The Blackberry plants would increase
The Rabbit population would decrease
The grass would increase
Environmental Change
A) The melting of polar ice caps due to global warming
B) The increase in biodiversity in urban areas
C) The stabilization of ocean temperatures
D) The reduction of greenhouse gases in the atmosphere
