Planets
This is the most massive planet in our solar system
Jupiter
This is how long it takes for the sun's rays to hit the Earth
About 8 minutes and 20 seconds
The spinning of the Earth on it's axis
Rotation
This object orbits the Earth and contains 6-8 astronauts at all times
The International Space Station
The part of the Earth that gets the most direct light from the sun.
The Equator
This is the only other planet in our solar system that we believe could sustain life
Mars
These are the 2 gases that primarily make up the Sun
Hydrogen and Helium
Revolution
He was the first Canadian to walk in space
Chris Hadfield
It takes this many hours for the Earth to revolve around its axis one time.
24 hours (1day)
This is the number of planets in our solar system
Eight (8)
These are the 2 main things that the Sun provides for the Earth so that it can sustain life
heat and light
The star you can use at night to find North
Polaris (the North Star)
The name of the Canadian tool that astronauts used as a work platform to repair other spacecraft with while in space.
The Canadarm (shuttle/space station remote manipulator system)
This is the path that the Earth takes when it revolves around the Sun
an orbit (all planets orbit around the Sun)
This is the name of our galaxy
The Milky Way
A total solar eclipse happens when this object comes between the Earth and the Sun
The moon
It takes this many days for the Earth to revolve around the Sun
365 (1 year)
This force must be overcome for an object (or person) to get to space
the force of gravity
This season has the longest shadows but the shortest days
Winter
The rings around Saturn are made of this
Ice
This is the state of matter on the surface of the Sun
Plasma
When this phase occurs twice in one month, it is called a Blue Moon
Full moon
This is the only planet that humans can naturally survive on
Planet Earth
Explain why the Earth has different seasons
Earth is tilted on its axis and at different points in the year either the Northern or the Southern hemisphere is closer or farther away from the Sun.