Earth and Space
The imaginary line around which the earth rotates is called?
Axis
Complete the planetary order:
Mercury, Venus, Earth, Mars
Jupiter, Saturn, Uranus, Neptune
What is the Earth's axial tilt?
23.5o
How do comets get their name?
Named after their discoverers
What force keeps the planets in orbit around the Sun?
Gravity
How long does it take for light from the Sun to reach the Earth?
8 minutes
What is a comet?
Comets are large objects made of dust and ice that orbit the Sun
How long does the Earth take to complete its orbit around the Sun?
365 and a quarter days
What is a short period comet?
it takes less than 200 years to complete orbit around the sun
What is the name of Earth's only natural satellite?
The Moon
What is the smallest planet in our solar system?
Mercury
What type of star is the sun?
How does a lunar eclipse occur?
Sun, Earth and Moon are aligned exactly, with the Earth in the middle.
What are asteroids?
Rocky or metallic objects that orbit the Sun
What is the most abundant gas in Earth's atmosphere?
Nitrogen
What causes the phases of the Moon?
The Moon's position relative to Earth and the Sun
Which planets are classified as terrestrial?
The first four. Mercury, Venus, Earth and Mars
What direction does the Earth rotate on its axis?
Counter Clockwise
What is the largest known asteroid?
Ceres
What do we call the path that planets follow around the Sun?
Orbit
Which planet is known as the Earth's twin because of its similar size and composition?
Venus
The planet that has rings
Saturn
What does the term 'aphelion' mean?
The point in the orbit of a planet, asteroid, or comet at which it is farthest from the Sun
What is the difference between a Meteor and a meteorite?
Meteor - A streak of light from a meteoroid entering the atmosphere
Meteorite - A meteoroid that survives its passage through the atmosphere and lands on a planets surface
Between which two planets is the asteroid belt located?
Mars and Jupiter