Save
Upgrade to remove ads
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

Geological Time

Match the event to the Era

QuestionAnswer
Earth forms: _________________ era/time Precambrian
"Age of Mammals": _____________ era Cenozoic
"Age of Dinosaurs": _______________ era Mesozoic
Life thrives in shallow seas and invades land masses later: ______ era Paleozoic
1st life arrives -- single celled bacteria that can withstand hot toxic environment: _________ era Precambrian
1st flowering plants; 1st mammals; 1st birds: _______ era Mesozoic
Ends in a mass extinction called, "Snowball Earth": ________ era Precambrian
Ends with the biggest mass extinction recorded, called "The Great Dying"; possibly caused by a combination of volcanism and/or asteroid impact: _________ era Paleozoic
Warm tropical environment; Earth is ice free at the poles; Pangaea breaks apart: ________era Mesozoic
Photosynthesizing bacteria evolve, taking in carbon dioxide and releasing oxygen: ______________ Precambrian
Cambrian explosion: ____________ era Paleozoic
Amphibians and reptiles evolve; Giant forests/swamps dominate land masses and become today's coal: _________ era Paleozoic
Oxygen levels build up enough to create an ozone layer -- which protects land organisms from U.V. radiation: ________ era Paleozoic
1st mammals appear: _________ era Mesozoic
Series of closely spaced ice ages: _________ era Cenozoic
1st humans evolve: ___________ era Cenozoic
Pangaea breaks apart during an episode of prolonged volcanism that warms the planet up: _____________ era Mesozoic
Ends in a mass extinction that is attributed an asteroid impact in Mexico's Yucatan penninsula. Lava flows in India may have also contributed to mass extinction: ______________ era Mesozoic
Volcanic gases like carbon dioxide, methane, sulfur dioxide and water vapor make up Earth's atmosphere: ____________ era Precambrian
What is the order of Eras? (Oldest --> Recent) (4.6 ba) Precambrian, (540 mya) Paleozoic, (245 (mya) Mesozoic, (65 mya) Cenozoic
Created by: burnsie
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