EOS1 exam science 2024
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Terrestrial planets
Mercury, Venus, Earth, Mars
Gas Planets
Jupiter, Saturn, Uranus and Neptune
The planets with belts
Saturn and Uranus
What separates the terrestrial and gas planets
asteroid belt
What caused Pluto to be defined as a dwarf planet?
The discovery of a rocky object similar in size to Pluto called Eris caused scientists to debate what defined a planet.
what classifies a planet.
according to an astronomer in 2006, to be classified as a planet the celestial body must -be in orbit around a star, while not being a star. -be large enough that its mass for its own gravity causes it to be spherical shape -travel in an orbit that does not overlap with objects including planets.
How many years till the sun implodes
6.5 billion years it will implode and destroy mercury venus earth before it turns into a white dwarf and its gravitational pull would cease.
The sun was created by…
a nebula that collapsed
the 8 planets could fit into the sun..
600 times
the suns core is
15 million˚c at the core
the sun holds the planets in orbit with
its gravitational force
the sun gives humans and plants life on earth through
humans and plants life on earth through photosynthesis
what zone is the earth in
goldilocks zone
what is solar radiation
energy released from the sun that reaches all the planets.
what are all the different types of energy thst areemitted from the sun is
electro-magnetic, visible light, infa-red radiation, ultra violet radiation, x-rays and gamma rays.
why do humans need ultra violet radiation
for the human body to make vitamin D
Why does the earth need Solar radiation
photosynthesis and for the surface and bodies of water to be warm enough for life.
___ units of solar radiation are reflected back into space by the atmosphere
25
___ units are absorbed by the ground and ocean
46
___ units are absorbed by the atmosphere
23
5 units are reflected back into space by the.,.
ground and the ocean.
what direction does the earth spins
anticlockwise which means sun rises in the east and sets in the west.
the earths axis tilt
23.5
one full orbit around the sun takes
365.25 days which is the reason for a leap year every 4 years.