Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

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.
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.
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

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

what in the world

reading book

crystal a solid piece of matter that has a regular arrangement of flat surfaces and angles
fire rainbow a halo of colors in the sky caused by the refraction of sunlight through the ice crystals in cirrus cloud
geologist someone who studies the Earth's physical structure
ozone a gas in the Earth's atmosphere
phenomenon an event that people can perceive through their senses; a remarkable event
playa a flat area at the bottom of a desert basin
refraction the bending of light through a substance
thatch roof covering made of straw or reeds
tidal bore a wave of water that travels up a river against the direction of the current
waterspout a mini tornado that forms over a river, a lake or an ocean
Created by: katebridges