Transcript The Moon and Earth Moon

Earth and Beyond
How Do Earth and the Moon
Compare?
The Moon and Earth
• Moon – any natural body that revolves
around a planet.
• Crater – a low, bowl shaped area on the
surface of a planet or moon.
Terms You Need to Know
• Axis – the imaginary line or pole that the
earth rotates on, giving us daylight and night
time.
• Orbit – The path one body takes in space as
it revolves around another body.
• Day – the time that it takes the earth to spin
on its axis one time
• Month – the time that it takes the moon to
move around the Earth one time
• Year – the time that it takes for the Earth to
revolve around the sun one time
The Moon and Earth are Alike
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Both are rocky
Both are fairly dense
Both are made of the same elements
Both have craters
Earth
Moon
Larger Size
Smaller Size
Stronger Gravity
Weaker Gravity
Looks blue from space Looks gray from space
Has liquid water
Has an atmosphere
Supports life
Does not have liquid
water
Does not have an
atmosphere
Doesn’t Support
The Earth, Moon, and You
• The moon's gravity is about 1/6 that of
Earth.
• Weight is determined by the amount of
gravity.
• If you weigh 10 lbs. on the moon, then
you would weigh 60 lbs. on Earth.
• If you weigh 120 lbs. on Earth, then you
would only weigh 20 lbs. on the moon.
Mass Stays the Same
• Your mass will always stay the same,
but your weight can change depending
on the amount of gravity.
High Mass vs. Low Mass
Planets
• You will weigh more on a high mass
planet because there is more gravity.
• You will weigh less on a low mass
planet because there is less gravity.
Daily Science Inquiry
• Think about the time it takes for Earth
to spin once, for the moon to move
around Earth once, and for Earth to
move around the sun once. Which
movement represents a day? Which
movement represents a month?
• Define: axis, orbit, and revolve
• Write the questions and turn in for a
daily grade.