Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/21

Click to flip

21 Cards in this Set

  • Front
  • Back
the curved path the Earth takes as it goes around the sun
axis
the shape of the earth
sphere
earth's yearly orbit around the sun
revolution
the spinning of the Earth on its axis
rotation
the imaginary line around which a planet such as earth spins
ellipse
when the sun's position is directly over the Earth's equator
Equinox
when the moon's shadow falls on the earth
solar eclipse
when the Earth's shasow falls on the moon
lunar eclipse
the changing appearance of the moon as seen from Earth
Moon phases
the point at which the ssun reaches its greatest distance north or south of the equator
solstice
a total solar eclipse can only be seen by people in the area or the Earth within the _____________________
moon's umbra (dark shadow)
the Earth rotates on its axis once every _____
day
night and day are caused by the ____ of the Earth
rotation
Which spacecraft provided data for a detailed map of the moon's surface?
Clementine
Scientists have been able to develop a model of the moon's interior structure by studying _______________.
moonquakes
What begins in June in the northern hemisphere and in December in the southern hemisphere?
summer solstice
Daylight hours are _________ for the hemisphere tilted toward the sun.
longer
The ______________ occurs in September and the _____________ occurs in March for the northern hemisphere.
fall equinox
spring equinox
After a full moon , when less of the moon's lighted side becomes visible, the phases are __________.
waning
Hours of daylight and nighttime are equal during the _____________.
equinox
The moon revolves around ________.
Earth