solar system

Question 1

what is the life cycle for a star the size of the sun?

Answer 1

• clouds of dust and gas form a nebula
• form of gravity pulls it together to form a protostar
• enters stable period where outward pressure and force of gravity is balanced
• eventually runs out becomes a red giant as fusion occurs
• it becomes unstable and ejects layer of dust and gas (white dwarf)
• when the white dwarf cools down it becomes a black dwarf

Question 2

what is the life cycle of a star bigger than the sun?

Answer 2

clouds of dust and gas form a nebula
• form of gravity pulls it together to form a protostar
• enters stable period where outward pressure and force of gravity is balanced
• eventually it runs out and it turns into a red super giant
• it undergoes more fusion and expands and forms supernova
• exploding supernova throws outer layer of dust and gas leaving dense neutron star

Question 3

what is the link between speed and orbit?

Answer 3

the closer you are to a planet the stronger the gravitational force so faster orbiting

Question 4

what is red shift?

Answer 4

when we look at light from distant galaxies it appears red as it has shifted towards red end of spectrum suggests it’s moving away

Question 5

what is an artificial satellite?

Answer 5

places into orbit by man

Question 6

what is a satellite?

Answer 6

anything that orbits a celestial body