Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


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. Your email address is only used to allow you to reset your password. See 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
edit
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

8th grade Science

Earth's Changing Climate End of Unit

QuestionAnswer
When carbon dioxide in the atmosphere increases, the amount of energy absorbed by Earth’s surface should increase
Scientists found evidence of a time period 3 billion years ago when less energy entered the Earth system than exited. What is one change to the atmosphere that could have caused this, and how did it change the amount of energy in the Earth system? Methane decreased, leading to less energy in the Earth system and less energy absorbed by Earth’s surface.
The Karoo Ice Age started about 360 million years ago and lasted for about 40 million years. During this time, less energy entered the Earth system than exited. What is one change to the atmosphere that could have caused this? Carbon dioxide decreased, leading to less energy in the Earth system because less exiting energy was redirected (bounced) back toward Earth.
What happens when energy hits sulfur dioxide? Sulfur dioxide redirects (bounces) some incoming energy from the sun back toward outer space.
Using evidence from rocks, scientists have found that from 300 to 290 million years ago, the amount of methane in the atmosphere increased. What happened to the energy absorbed by Earth’s surface during this time? increased
Scientists are using a computer simulation, they notice that more energy entered the Earth system than exited. How might the amount of carbon dioxide have changed to cause this, and how would this have changed the energy in the Earth system? carbon dioxide increased, leading to more energy in the Earth system and more energy absorbed by Earth’s surface.
Scientists study tree rings to learn more about Earth’s past climate. They found a time period when the amount of carbon dioxide in the atmosphere decreased. What happened to energy in the Earth system when carbon dioxide in the atmosphere decreased? decreased, because less energy entered than exited. This is because less exiting energy was redirected (bounced) back toward Earth.
What is one reason that carbon dioxide is increasing in the atmosphere today? There are more people doing things that use combustion.
Scientists who study the atmosphere take some atmosphere samples near the ground. They take other atmosphere samples high in the air, while flying in a helicopter. What would the scientists find out about the samples? Both samples are made of a mix of several different kinds of gases.
Climate researchers in Greenland found an ice core sample that shows there was a period when carbon dioxide in the atmosphere decreased. What happened to the amount of energy absorbed by Earth’s surface during this time? decreased
Some bacteria produce methane during digestion. If the amount of these bacteria decreased a lot, the amount of methane in the atmosphere would decrease. What would happen to energy in the Earth system if this happened? there would be less energy in the Earth system and less energy absorbed by Earth’s surface, because less energy would enter than exit.
About 360 to 299 million years ago, swampland on Earth increased, which may have led to a large increase in the amount of methane in Earth’s atmosphere. What happened to energy in the Earth system when the amount of methane in the atmosphere increased? increased, because more energy entered than exited. This is because more exiting energy was redirected (bounced) back toward Earth
When making an argument about how climate change is affecting the ice cover on Earth, what would be the least effective type of evidence to support your argument? data tracking glacier size for only a few years (many years is better)
What can humans do to help keep carbon dioxide and methane in Earth’s atmosphere from increasing? Drive their cars less often AND eat less meat so that fewer livestock need to be kept
During the Pleistocene Epoch time, methane in the atmosphere decreased. What would scientists expect to observe about the amount of energy absorbed by Earth’s surface during the time periods when methane decreased? decreased
In the last 5 million years of the Permian period in Earth’s history, carbon dioxide in the atmosphere increased. How did energy in the Earth system change during this time? There was more energy in the Earth system and more energy absorbed by Earth’s surface, because more energy entered than exited.
Climate scientists looking at one period of time in the simulation see that more energy entered the Earth system than exited. How could the amount of methane have changed to cause this, and what effect would this have on energy in the Earth system? Methane increased, leading to more energy in the Earth system because more exiting energy was redirected (bounced) back toward Earth.
You do an experiment in order to analyze what is in the atmosphere. What do you think you will find? The atmosphere is made of a mix of different kinds of gases.
Sulfur dioxide that is emitted from an erupting volcano will cause the atmospheric temperature to increase. True or False? false
There is a trend of increasing temperatures on Earth since about what year? 1880
Methane affects the atmosphere in much the same way that carbon dioxide does? True or False? true
Decreased carbon dioxide in the atmosphere will cause the earth's temperature to cool. True or False? true
Increased carbon dioxide in the atmosphere will cause the earth's temperature to cool. True or False? false
Carbon dioxide and methane increases are attributed to human activities. True or False? true
Fluctuations can occur within a trend. True or False? true
Which occurs over a long period of time? Fluctuation or Trend? trend
If more energy leaves the system than enters, the temperature on earth will become ..... Cooler or Warmer? cooler (think open oven door)
If more energy enters the system than leaves, the temperature on earth will become ..... Cooler or Warmer? warmer (think closed oven door)
There is nothing that humans can do to change the carbon dioxide and methane. True or False? false
carbon dioxide and methane stop energy from leaving by redirecting energy that would have exited the system. True or False? true
Created by: kbieber2023
Popular Earth Science sets

 

 



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