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.

By signing up, I agree to StudyStack's Terms of Service and Privacy Policy.

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.

Remove ads
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

HMS Sun Earth Moon

Practice for the Unit Test

The main reason we have seasons on Earth Tilt
When a moon or planet spins Rotate
To spin around a larger object in space Revolve
This tide has the largest daily change in tides; when the Moon, Sun & Earth are in a line Spring
This tide does not change much during the day; the Sun, Moon & Earth make a 90 degree angle Neap
Along with some help from the Sun, this is what mainly causes the tides Moon
Allows for objects in space to revolve around the sun and for moons to revolve around planets Gravity
The Sun, Moon & Earth must line up perfectly in order to cast a shadow Eclipse
When the moon appears dark New moon
When the moon is 100% illuminated Full moon
This allows for sunrise and sunset on Earth Earth's rotation
How long it takes for the Earth to revolve around the Sun 365 days
How long does it take the moon to go through all of the phases? 28 days
The shortest day of the year is during this season? Winter
One of the main reasons we have life on Earth is because of this element Oxygen
Without this liquid, life on Earth might not be possible? Water
The hottest places on Earth are generally near the ________________ because it gets the most direct sunlight. Equator
The poles remain cold all year lond because they get __________ sunlight. Indirect
High tide happens on the side of the Earth facing the? Moon
Each moon phase takes about ____ days. 3.5
Created by: chanteb