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state life cycle of a small star
protostar, main sequence, red giant, white dwarf and black dwarf
What is the difference between a black hole and neutron star?
Black hole is from biggest stars, absorbs everything. Neutron star is the smallest densest star to exist
Whether the star is a big star or a small star, they all start of being...
A protostar and then main sequence star
What is Nuclear fusion?
When Hydrogen joints with Hydrogen to form Helium
Put these in order of biggest to smallest: Planet, moon, star, Universe, solar system and galaxy
moon, planet, star, solar system, galaxy and universe
What causes seasons?
The tilt of the earth as it rotates around the sun
Which planet would have a shorter year than Earth and why?
mercury/venus (closer to the sun than earth)
What is the differences between heliocentric and geocentric models of our solar system?
Heliocentric has sun at centre, has sun bigger than planets and has all the planets in the correct order. Geocentric had earth in middle, sun rotated earth
How many hours is 1 day?
24 hours
What is a year? (definition)
How long it takes a planet to go around a star (sun)
How many days is a year on Earth?
365 1/4 days
Why is the temperature on Jupiter different from Earth's?
It is further away so therefore colder
weight is a force that always acts
down
If I moved to a different planet what wouldn't stay the same and why
weight- gravity would change
If I moved to a different planet what would stay the same?
mass
What is gravity on Jupiter if mass is 10kg and weight is 45N
4.5
An alien on Mars has a mass of 7kg and a gravity of 4m/s2 what is the weight of the alien?
28N
Gravity on earth is always
10
Weight is a force measured in
Newtons
Mass is measured in
kilograms (kg)
What are the name of the 2 solar system models
geocentric and heliocentric
How many planets are there in our solar system
8