The Earth, the Moon, and the Sun What

The Earth, the Moon, and the Sun What

The Earth, the Moon, and the Sun What do we call a scientist who studies the planets

and stars? astronomer How long does it take for the Earth to revolve around the sun?

365 1/4 days How long does it take for the Earth to rotate on its

axis? 24 hours What does the tilt of the earth on its axis

cause? the seasons More direct rays from the sun cause ________. summer

Slanted rays from the sun cause _______. winter Earth is the

_______ third planet from the sun. Earths surface is

constantly _________. changing Earths surface is three-fourths _______. water

What 2 things make it possible for there to be life on Earth? What is at the center of our solar system?

SUN How much bigger is the suns diameter than the Earths? 110 times

How far away is the sun from the Earth? 92 - 95 million miles

What is the sun made of? Hot, glowing gases What are the dark patches

visible on the suns surface? What is the Earths only natural satellite?

the moon How far away is the moon from the Earth? 250,000 miles

How big is the moon compared to the Earth? One-fourth the size of the Earth

The moon has extreme temperatures. This means it is very ______ hot in the

daytime and very cold at night. ______ Why is it not possible for there to be life on the moon?

No air & no water What is the moons surface covered with? Craters,

mountains, and flat plains We learned about the moon when: Astronauts collected rocks

and soil from the moon Astronauts set up experiments on the moon What is the moon phase when we see all of the lighted

side of the moon? full What is the moon phase when all of the lighted side of the moon is

turned away from us? new When the moon is ________ waxing we see more of the lighted

side each night. When the moon is _______ waning we see less of the lighted side each night. During which moon

phase do we see only a very small part of the lighted side? Crescent During which phase do

we see almost all of the lighted side of the moon? Gibbous During which moon phase is the moon

between the Earth and the sun? New Moon Who believed in an earth-centered solar system?

Aristotle and Ptolemy Who believed in a sun-centered solar system?

Galileo and Copernicus Who built the first telescope? Galileo

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