P8 space quiz

What is a protostar?

• A fully formed star at the end of its life

• A large planet that emits its own light

• A contracting cloud of dust and gas before a star forms

What causes a nebula to form a protostar?

• Expansion due to radiation

• Gravity pulling the gas and dust together

• The explosion of a nearby star

What is the main sequence stage of a star?

• When a star collapses into a black hole

• A stable phase where gravity and fusion are balanced

• The very beginning of a star’s life

What happens when hydrogen runs out in a star?

• It becomes a white dwarf immediately

• It cools and shrinks into a planet

• It turns into a red giant or super giant

What will a red giant eventually become?

• A black hole

• A white dwarf

• A neutron star

What is the final stage of a star like the Sun?

• Black dwarf

• Supernova

• Neutron star

What is a supernova?

• A collision between two stars

• An explosion that occurs after a red super giant sheds its layers

• A type of planet with a strong magnetic field

What forms after a supernova?

• A main sequence star

• A new galaxy

• A black hole or neutron star

What are artificial satellites?

• Natural objects that orbit moons

• Man-made objects orbiting planets like Earth

• Stars that orbit larger stars

What determines the speed of an object in orbit?

• The temperature of the object

• The force of gravity and its distance from the object it orbits

• The mass of the nearest star