level1
The study of the moon,stars, and other objects in space is called?
Astronomy
The imaginary line that passes through earths center and the north and south poles is earths
Axis
Earths orbit around the sun takes about ____ days
365 1/4
When is the longest day and shortest day of the year
June 21st December 21st
The force of gravity is measured in
Newtons
What two ways does earth move through space?
Rotation
Revolution
____is the movement of one object around another
Revolution
Why do we have leap year
To make up for the 1/4 of a day
What causes the winter and summer solstice
In summer sun is farthest north of the equator in the winter the sun is farther south of the equator
What states that every object in the universe of attracts every other object?
Law of universal gravitation
It takes the earth ______ to complete a full revolution
1 year
The path the earth takes is its ___ as it revolves around the sun
Orbit
Earth has seasons because it’s ____ is tilted as it revolves around the sun
Axis
Halfway between the solstice, neither hemisphere is tilted toward or away from the sun and they are equal day and night is called
Equinox
The strength of the force of gravity between two objects depends on two factors. And
Mass and distance
Earths rotation causes ___&___
Day& night
The earths orbit is ____ in shape
Elongated circle/oval
What are the four seasons
Summer spring fall winter
What is a push or pull
Force
Is the amount of matter in an object
Mass
It takes earth about _____ hours to rotate once
24
WhT is a system of organizing time
Calendar
When the sun is farthest north or south of the equator it is know as
Solstice
What attracts all objects toward each other?
Gravity
The force of gravity on an object is known as
Weight