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How did the Big Bang begin?
Singularity of dense hot point
Which element was first formed ?
Helium
What 2 era's are there in the Big Bang theory?
Radiation and Matter Eras
What was the first element formed in the Matter Era?
Hydrogen
What is the 4th state of matter?
Plasma
What are the 2 categories of planets?
Terrestrial and Jovian
Name all the planets
Mercury, Venus, earth, mars, Jupiter, Saturn, Neptune, Uranus
Compare a fact between earth and Venus
Same size about, rotate in opposite directions to one another,
Where do comets come from? How did they form?
Parts of material left over from the Big Bang and in the Kuiper belt
What is a comet made of?
Dust, gas and ice and small rocks
What planet is this? Taken by Viking orbiter.
Mars
Name a famous comet.
Halleys comet
What is the reason for our planets being able to orbit the sun?
Gravity
What is a galaxy?
A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems.
Why do we have seasons on earth?
Tilt, rotation and angle of the sun on earth
What degree is the earth tilted at?
23.5 degrees
