Seasons
What two seasons start at the equinox?
spring and fall
What does the word eclipse mean?
block an object from view
What happens when the earth rotates every 24 hours?
Day and Night
Gravity is a force that __________
pulls objects toward each other
How far is the moon away from the earth?
less than 300,000 miles
How long does it take for the earth to experience four seasons?
1 year or 365 days
The definition of a solar eclipse is when the ________ stops the sun's ightwaves and cast a shadow on a particular section of earth.
moon
How long does it take for the moon to revolve around the earth?
30 Days or 1 month
__________ is the force that keeps the earth from falling into the sun
Gravity
Why don't we visit nearby stars?
Because they are so far away that it would take us longer to get there than we live on earth.
What three parts of the earth do not experience the four seasons and instead have the same type of climate all the time?
North and South Pole and Equator
The defininition of a lunar eclipse is when the ________ blocks the sun's light waves from hitting the ________.
earth, moon
How long does it take for the earth to revolve around the sun?
365 or 1 year ( it technically takes 365 days and 1/4 of another so every four years we have leap year )
An object at rest would stay at rest unless a force acted on it due to _____________, a law discovered by Issac Newton
inertia
The circumference of the earth is _____________. A _______________ earths would fit inside the sun.
25,000 miles , 1 million
What is the reason the earth has seasons?
Tilt of earth
During an eclipse the temperature drops-why?
because the reduced lightwaves from the sun cause there to be less heat
How is a rotation different from a revolution?
Rotation means spin in place. Revolution means circle another object on an orbital path
An object in motion would stay in motion due to the law of _______ discovered by Issac Newton.
inertia
How far is the sun from the earth?
93 million miles
Why does the tilt of the earth cause seasons?
The tilt causes sunlight to hit earth at an angle and heat the earth unevenly.
THe moon revolves around the earth every 30 days, why don't we have an eclipse every month?
Because the moon is at an angle and is not always on the exact plane of the ecliptic with the earth.
What is an orbit?
The path a planet or moon follows as it revolves
Gravity and Inertia work together to keep planets and moons on their __________.
Orbital path or orbit.
How long does it take for light to come from the sun to earth?
8 minutes