Show:
Mapping Earth
Earth's Structure
Plate Tectonics
Solar System and Space
Sun - moon - Earth
100
the part of a map that tells you how far apart points on the map are
What is the scale?
100
the inner layers of Earth, both made of dense metal (iron and nickel)
What are the inner and outer core?
100
Convection currents in this layer cause the crust's plates to move
What is the mantle?
100
this is made of the Sun, eight planets, and many small objects
What is the Solar System?
100
The amount of time it takes Earth to revolve around the Sun once
What is a year?
200
a map with lines that show elevation
What is a topographic map?
200
The thickest layer of Earth, outside the core, made of solid and semi-solid rock
What is the mantle?
200
Earthquakes, volcanic mountains and mid-ocean ridges are caused by this
What is plate movement?
200
this force keeps planets orbiting the Sun, and moons orbiting planets
What is gravitational force (gravity)?
200
The amount of time it takes Earth to rotate on its axis
What is a day (24 hours)?
300
the distance between two lines on a topographic map
What is the contour interval?
300
The thin outer layer of Earth, made of solid rock - the one we live on
What is the crust?
300
These happen when plates become locked and stress builds up in them, then they suddenly release
What are earthquakes?
300
groups of billions of stars that are held together by gravity
What are galaxies?
300
Earth's tilt as it revolves around Earth causes these
What are seasons?
400
This is the same for all points on a contour line
What is elevation?
400
These two things increase as you go deeper into the Earth
What are temperature and pressure?
400
this supercontinent existed 250 million years ago
What was Pangaea?
400
the galaxy we live in
What is the Milky Way?
400
This is caused when the sun - moon - Earth line up in that order, and the moon is a new moon
What is a solar eclipse?
500
When these are closer, the slope is steeper
What are contour lines?
500
This is broken into pieces called plates that float on top of the soft, hot asthenosphere
What is the lithosphere?
500
When these are found on different continents, this is evidence that the continents have moved
What are fossils?
500
this is all of space and contains billions of galaxies
What is the universe?
500
This is causes then the sun - Earth - moon are lined up in that order, and the moon is full
What is a lunar eclipse?