Keller - 3rd Earth, Sun, Moon Cycles Flashcards
(35 cards)
The earth ___________ on its axis and orbit the sun.
rotates
An ________ is an imaginary straight line around the Earth rotates.
axis
The axis goes from ________ pole to the ________ pole.
North, South
The earth’s __________ causes day and night.
rotation
What is rotation?
The spinning of an object on its axis.
It takes the earth ____________ to make one rotation.
one day or 24 hours
The earth revolves around the _______.
sun
What causes the seasons?
The tilt of the earth on its axis
How long does it take the earth to make one revolution around the sun.
365 1/4 days
The ________ of the moon are different shapes the moon seems to have in the night sky.
phases
The moon repeats phases how often?
Once a month
What is the cause of the phases of the moon?
positions of the sun, earth, and moon
No matter what phase the moon is in, _____ of it is ALWAYS lit by the sun.
HALF (the half that is facing the sun is always lit)
Why does we see lunar phases?
As the moon moves in its orbit, different positions of it appear to be lit up as we look at it from earth.
The moon creates ______ and ______ tides on earth.
high and low
When the ocean moves away from the land, it is _______ tide.
low
When the ocean moves towards the land, it is _______ tide.
high
What does a new moon look like?
explain or draw
What does a crescent moon look like?
explain or draw
What does a quarter moon look like?
explain or draw
What does a gibbous moon look like?
explain or draw
We don’t feel the earth moving but it is never still. It is always moving in ______ way.
two
The earth _________ around which is what causes day and night.
rotates (or spins)
How long does one rotation of the earth take?
24 hours or one day
