Save
Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't know
Remaining cards (0)
Know
0:00
share
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

JLC Grade 4 Sci Ch 4

JLC Grade 4 Science Chapter 4 Understanding Ecosystems

QuestionAnswer
Work done to repair a damaged ecosystem. Habitat restoration
Having to do with the living factors of an ecosystem. biotic
All the groups of plants and animals living in the same ecosystem environment
Variety in living things. diversity
The living and nonliving things in a particular place. ecosystem
All living and nonliving things around us environment
Harmful substances mixed with water, air, or soil. pollution
A group of the same kind of plant or animals, living in the same ecosystem population
Name of nonliving part of ecosystem abiotic
Examples of living part of ecosystem animals, plants, insects
Examples of nonliving part of ecosystem air, water, soil, rocks, sand
Climate that ecosystems would have most diversity tropical rain forest
Farmer Brown has many mice in his barn. He adopts some cats to live in the barn. Predict: What will happen to the mice population? What will happen to the cat population? Nothing Mice and cat population will increase Mice population will increase and cat will decrease. Mice population will decrease and cat population will increase.
Oil drips from a truck and then washes into a pond. Soon all the fish get sick and die. What is this an example of? Which is correct answer? adaptation erosion restoration pollution
The town closes the landfill and covers it over with soil and trees to make a nice park. What is this an example of? Which is correct answer? biotic factor population habitat restoration erosion
A lawn includes grass, soil, air, insects, earthworms and birds. If you add extra water and fertilizer to the lawn, which part of this ecosystem will change? Which is correct answer? None All because they all interact Grass – because water and fertilizer Soil – because moister and richer ingredients
A tree is covered with bittersweet vines that grew quickly up the tree and blocked light and caused the tree to die. What is this called? Which is correct answer? A tree meeting its needs. Climate changing population. Pollution harming an ecosystem. A biotic factor changing an ecosystem.
Name steps people can we do to reduce air and water pollution Factories: Reduce amount of chemicals released in air and not dump waste in water Drive less and limit the amount of pollution cars give off.
John cleared weeds from one hill for corn. The other hill he left alone until pea season. A rainstorm washed all the soil on the hill he was preparing for corn but the other hill was untouched. What conclusion can you draw? The roots of the weeds help keep the soil in place. The area of soil cleared of the weeds has nothing to hold onto and washes away.
John says that he is conserving energy by riding his bike to work but Mary is not because she drives her car to work. Mary says her car does not impact energy resources and has no impact on the ecosystem. Who is right? John A car uses gasoline, a fuel that cannot be replaced, while a bicycle uses replaceable fuel (energy from food you eat). A car gives off pollution which hurts ecosystem. A bicycle does not give off any pollution and does not affect ecosystem.
Created by: jkm1123
 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards