Geocentric model of the universe
which has the Earth at the centre
and the Sun, moon,stars revolving around.
100
What are the outer planets?
*Jupiter
*Saturn
*Uranus
*Neptune
100
What are the inner planets called?
*Mercury
*Venus
*Earth
*Mars
100
What is a Comet?
Ice, rock and gas
100
What are some careers related to space?
*Astronaut
*Scientist
*Technicians
200
what did Ptolemy discover?
Stated that each planet moved on
a small circle called an epicycle
which moved on a larger circle
called a deferent
200
Are the outer planets large or small?
They are large
200
What are the sizes of the inner planets?
They are smaller
200
What is a meteor?
The streak of light that occurs when a Meteoroid
enters Earths atmosphere and burns up
200
What are some Risks Associated with Space?
*Risk of equipment failure
*Malfunction during takeoff
*Heat shield not protecting the spacecraft
300
What did Nicolaus Copernicus discover?
Explained celestial bodies moved where
the Earth rotated on it’s axis once daily
and revolved around the sun once a
year
300
Are the outer planets warm or cold?
They are cold
300
What are the temperatures of the inner planets?
The inner planets are warmer
300
What is a Asteriod?
Small bodies that are believed to be leftover
remains of the formation of the solar
system.
300
What does the sun provide us with?
Sun provides with all the
heat and light to make
life possible
400
What did Galileo Galilei discover?
*First person to use a telescope to observe
celestial objects
*Observed craters on the Moon and spots
on the Sun as well as four “stars” orbiting
the planet Jupiter (the moons of Jupiter)
400
What is the motion of the outer planets?
faster spinning, larger orbits
400
What is motion of the inner planets?
Slower spinning, smaller orbits
400
What is the life time for a Comet?
Around 200 years
400
How much longer will the sun burn?
Around 5 billion years
500
What did Johannes Kelper discover?
Developed Three Laws of
Planetary Motion:
1) all planets move in ellipses with
the Sun at its focus
2) The speed of a planet as it revolves around the Sun is not
constant – it speeds up when it gets closer to the Sun and
slows down when it gets further away
3) The time it takes a planet to revolve around the Sun is
directly related to how far it is away from the Sun
500
What are the outer planets distance from sun?
Further away
500
What is the distance from sun?
They are closer
500
What is a Meteor that reaches the earth?
meteoriod
500
What are solarflares?
extremely violent eruptions of gas that
can last for a few hours and heat gases up to
11 000 000°C.