Solar System 1
What is the center of our solar system?
The Sun
Which planet is famous for its large, beautiful rings?
Saturn
What is the only natural satellite that orbits Earth?
The Moon
What is the Earth's atmosphere?
A protective blanket of gases that surrounds the planet.
Where do almost all meteors ("shooting stars") burn up when they enter Earth?
The mesosphere.
How many planets are in our solar system?
eight
What are the four inner, rocky planets called?
The terrestrial planets (Mercury, Venus, Earth, and Mars)
What are the rocky, irregularly shaped objects that mostly orbit between Mars and Jupiter?
Asteroids
What is the most abundant gas in Earth's atmosphere?
Nitrogen
What is the atmospheric layer where auroras (Northern Lights) occur and where satellites orbit?
The Thermosphere.
Which planet is closest to the Sun
Mercury
What are the four outer planets primarily made of?
Gas and Ice
What are comets mostly made of?
Ice, dust, and rocky material.
Which gas in the atmosphere do humans need to breathe?
Oxygen
Which layer is the outermost edge of our atmosphere, slowly fading into space?
The Exosphere.
Which planet is known as the "Red Planet"?
Mars
What do planets in our solar system orbit around?
The Sun
Which planet is the farthest from the Sun?
Neptune
In which layer of the atmosphere do we live and experience weather?
The Troposphere.
Why does the air pressure decrease the higher you go up a mountain?
Because there is less air pushing down on you from above.
What is the largest planet in our solar system?
Jupiter
Which is the hottest planet in the solar system and why?
Venus (because its thick atmosphere traps heat).
What invisible force holds everything in the solar system in orbit?
Gravity.
. Which layer of the atmosphere contains the ozone layer that protects us from the Sun's harmful UV rays?
The stratosphere.
How many main layers of atmosphere does Earth have?