Astrophysics 1 (for double science)

The first stage in the evolution of a star.

• nebula

• protostar

• main sequence

• white dwarf

Our sun is currently a ...

• nebula

• red giant

• protostar

• main sequence

Our sun's next stage of life.

• supernova

• main sequence

• red giant

• red supergiant

A supernova can become a black hole or ...

• neutron star

• white dwarf

• red giant

• protostar

A red giant comes before a main sequence.

• true

• false

A large cloud of dust and gas

• red giant

• white dwarf

• nebula

• supernova

What force turns a nebula into a protostar.

• air resistance

• tension

• gravity

• drag

Hydrogen fuses together to make ....

• radon

• a viscous liquid

• helium

• uranium-235

The centre of a nebula becomes very hot because of this process.

• nuclear fission

• nuclear fusion

• thermal expansion

• beta decay

The outward pressure that makes a star expand.

• thermal expansion

• nuclear fusion

• alpha decay

• gravity