What do we call the change when you pass through the layers of the geosphere?
a discontinuity
15
What is the geosphere?
The layers that make up the Earth
15
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
20
Name the 4 inner planets (closest to the sun) and give a brief description.
Mercury, Venus, Earth, and Mars - small and rocky
20
Name 3 characteristics of Earth.
life, water covers 3/4 surface, 1 moon
15
An extremely hot, dense mass of gases.
a star
10
Name the planets in order from the sun.
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune
15
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
20
Which planet is the largest of the inner planets?
Earth
15
Moons are smaller than planets and held in place by?
the pull of gravity of the planet they orbit
10
Where is our solar system?
Inside one of the spiral arms of the Milky Way
10
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
20
How long (in days) does it take us to orbit (revolve) around the Sun?
365 days
10
How long is one day on Planet Earth?
24 hours
10
The very center of the Earth is called the ___.
inner core
10
What layer of Earth's atmosphere do satellites and space stations orbit the Earth in?