Eclipses
This occurs when the moon blocks the light of the sun from reaching Earth.
solar eclipse
How much of the moon's surface is lit (except during a lunar eclipse)?
50%
half
The Earth revolves around the sun in a __________ motion.
Clockwise or counterclockwise?
counterclockwise
What season has the most daylight hours?
summer
What planet has the most moons?
Saturn (83!)
This occurs when the Earth is between the sun and the moon, creating a shadow that covers the moon.
lunar eclipse
What moon phase is occurring when the Earth is between the sun and the moon?
Full moon
The Earth ________ on its axis as it ________ around the sun.
rotates, revolves
The summer months receive more ________ sunlight, while the winter months receive more _______ sunlight.
direct, indirect
Which two planets have no moons?
Mercury and Venus
Lunar eclipses occur during which moon phase?
full moon
What moon phase is occurring when the moon is between the sun and the Earth?
New moon
Day and night are caused by the ____________ of the Earth.
rotation
When it is fall in the Northern Hemisphere, it is _______in the Southern Hemisphere.
spring
Our solar system is ________, meaning the planets revolve around a fixed sun.
heliocentric
Solar eclipses occur during which moon phase?
new moon
What is a second full moon in a calendar month called?
Blue Moon
The seasons are caused by the ____________ of the Earth.
revolution
Choose the two most important reasons for the different seasons on Earth.
A. The distance between the sun and the Earth.
B. The Earth's tilted axis.
C. The Earth's position as it revolves around the sun.
D. The positions of the Earth, moon and sun in relationship to each other.
B. The Earth's tilted axis.
C. The Earth's position as it revolves around the sun.
While Earth's axis is tilted about 23.5 degrees, this planet tilts at almost 98 degrees!
Uranus
A total _______ eclipse can only be seen if you are in the umbra.
solar
What is it called when the lighted portion of the moon appears to be 'growing' as it goes from the New moon phase to the Full moon phase?
waxing
The Earth's North Pole always points ____________________________.
A. directly at the sun
B. away from the sun
C. in the same direction in space
C. in the same direction in space
The Earth's axis is tilted _____ degrees from vertical.
23.5
What phenomena keeps the planets in steady orbit around the sun?
gravity