Science MCQs

If the core is dense enough it becomes a neutron star.

Stars generate energy by fusing hydrogen into helium in their cores.

Blue stars are the hottest followed by white yellow orange and red.

Red stars have the coolest surface temperatures.

Apparent brightness depends on intrinsic luminosity and distance.

Distances in space are so vast that using kilometers results in impractically large numbers.

The expanding surface of the balloon represents the expanding space between galaxies.

As the universe expands the space between galaxies increases.

The CMB is remnant radiation from the early hot dense phase of the universe.

The expanding Sun will engulf inner planets and make Earth uninhabitably hot.