Vocabulary
Vocabulary
Lesson 3
Lesson 4
Lesson 4/5
100
Orbit
What is the earth's path around the sun
100
Revolution
What takes a year to move around the sun
100
24 hours
What is the length of a day on earh
100
The spinning around of a planet on its axis
What does rotation mean
100
An orbit is the path that an object takes during against the background of the stars
How is a revolution related to an orbit
200
Apparent motion
What is when an object seems to move
200
Rotation
What completes one every year
200
A way an object seems to move
How is an object's apparent motion different from actual motion
200
Earth's rotation
What causes the apparent motion of the sun and stars
200
Gravity
What divides earth into two hemispheres
300
Hemisphere
What is one half of the earth
300
Eclipse
What does the moon cause when it blocks sunlight from shining on earth
300
Mostly circles
How would you describe the shape of a planet's orbit
300
The object doesn't twinkle, and it changes position against the background of the stars
Suppose you think an object in the night sky is a planet. What clues might lead you to this?
300
June Solstice
What marks the beginning of summer
400
Eclipse
What is light blocked from shining on an object in space
400
Gravity
What causes a moon to revolve around a planet
400
Darkness, because the sun's light is blocked
What effect does a solar eclipse have
400
The size of the shadows change as the time of day moves on
What did you notice about your experiment with the shadows
400
A nearly circular path around the sun
What is the earth's orbit
500
Rotation
What is earth spinning around
500
Go to the southern hemisphere, because it tilts away from the sun in July
Where might you go to find winter in July
500
Shorter
When the sun is directly over an object, the shadow will appear
500
What happens with shadows as the day progresses
What were we trying to find out in our experiment with our shadows
500
the earth's tilt causes the seasons
One hemisphere tilts away from and then toward the sun during the years, so the amount of sunlight it receives varies
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