The Role of Gravity
This makes an apple fall to the ground
gravity
The seasons in the Northern and Southern Hemisphere are _______
opposite
a large object that orbits a star
planet
patterns of stars are called ______.
constellations
What color of star is the coolest?
red or orange
Earth's water levels _____ on the side of the Earth AWAY from the Moon
fall
The tilt of Earth's ______ causes the change in seasons.
axis
One revolution around the Sun takes this long
one year
_____ produce their own light and heat.
stars
What color of star is the hottest?
white or blue
What would happen if a meteorite encounters the Earth?
It would hit Eartha and create a crater
The appearance and shape of the Moon as you see it at a particular time.
Moon phases
The farther a planet is from the Sun, the _______ its year. (shorter or longer)
longer
stars appear to move in the sky because of
Earth's rotation AND revolution
What affects the apparent brightness of the stars?
The distance from earth and their size
Earth revolves around ______
the Sun
It takes this long for Earth to complete on full rotation on its axis.
24 hours
galaxy
What makes a star different colors?
Why do some stars appear brighter than other stars in the night sky?
they are closer to Earth
A space rock that enters Earth's atmosphere
meteor
What would happen if Earth was not tilted toward or away from the Sun?
Days and nights would be about equal in length.
Planets revolve around the Sun in an _______ orbit
elliptical
Why do some stars appear brighter than others in the night sky?
Some stars are closer to Earth than others.
What do scientists use to measure distance in space?
light-years