Topic 7 Flashcards
A force of attraction between two objects
Gravity
A dark area or shape made by an object or organism blocking a source of light
shadow
A group of stars that appear to form a shape or picture
constellation
Everything that has mass ________________, or applies, a gravitational _________________ on other objects.
Exerts, force
Only objects that have huge amounts of ___________, exert or apply gravitational forces that you can feel.
mass
Earth’s gravity is much _______________ than the objects we see being pulled down.
stronger
Gravity is a _______________ force. It cannot be “turned off”.
constant
Gravity exists between all objects in ___________.
space
Stars stay in their ___________________ because of gravity.
galaxies
Our sun has much more mass than Earth or the planets and objects that ____________ around it.
revolve
The gravity of the sun holds Earth and other objects in space in their ________________.
orbits
Earth’s gravity holds the ______________ in its orbit.
moon
An imaginary line that goes through the center of an object
Axis
Objects or events that occur in the same order or manner
pattern
The spinning of an object around its axis
rotation
The movement of one object around another object
revolution
An axis is an ___________________ line that goes through the center of an object.
imaginary
Earth’s axis passes through the North Pole, the center of Earth and the _____________ Pole.
South
Earth makes on complete ________________ about every 24 hours. One rotation is equal to about one ______________ on Earth.
rotation, day
As Earth rotates, different areas of Earth face the _________.
sun
The side of the Earth that faces toward the sun experiences _________________.
Day
During the day, the sun appears to rise in the —————. Then it “moves” across the sky and finally sets in the _________.
East, west
Earth’s motion around the sun is called a ____________.
revolution
Earth takes about 365 days, or one ________, to complete one revolution around the sun.
year
