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What do we call the change when you pass through the layers of the geosphere?
a discontinuity
What is the geosphere?
The layers that make up the Earth
What does our solar system consist of?
Sun, planets, dwarf planets (smaller planets), moons, asteroids, comets, meteoroids, and a host of frozen worlds beyond Neptune
Name the 4 inner planets (closest to the sun) and give a brief description.
Mercury, Venus, Earth, and Mars - small and rocky
Name 3 characteristics of Earth.
life, water covers 3/4 surface, 1 moon
An extremely hot, dense mass of gases.
a star
Name the planets in order from the sun.
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune
Name 3 characteristics needed to be considered a planet.
1. object must be in orbit around the sun 2. object must be nearly spherical in shape 3. object has cleared the neighborhood around its orbit of smaller planets
Which planet is the largest of the inner planets?
Earth
Moons are smaller than planets and held in place by?
the pull of gravity of the planet they orbit
Where is our solar system?
Inside one of the spiral arms of the Milky Way
Name the 4 outer planets (farthest from the sun) and give a brief description.
Jupiter, Saturn, Uranus, and Neptune - gas giants, freezing temperatures, many moons, and ring systems
How long (in days) does it take us to orbit (revolve) around the Sun?
365 days
How long is one day on Planet Earth?
24 hours
The very center of the Earth is called the ___.
inner core
What layer of Earth's atmosphere do satellites and space stations orbit the Earth in?
the thermosphere
