IGCSE Physics | Astronomy

The explosion that sent the universe flying out is called _____.

• The Big Bang

• The Milky Way

• The Solar System

• The Sun

Since the Big Bang, and even today, the universe is still _____.

• Expanding

• Shrinking

• Cooking

• Spinning

As galaxies move away from our galaxy

a shift on the electromagnetic spectrum

(EMS) is noticed. This phenomena is

called _____________.

• redshift

• blueshift

• unshift

• blackshift

Earth and its solar system are a part of which of the following galaxies?

• Andromeda
• Black Eye
• Milky Way
• Cartwheel

Which of the following best describes a galaxy? A galaxy is –

• the ending of the life cycle of all super massive stars in the universe.
• a massive system of stars, gas, dust, and dark matter bound together by gravity.
• a visible body of liquid or frozen crystal droplets suspended above a planetary surface.
• the visible path of a meteoroid as it enters Earth’s atmosphere.

What are stars mainly made of?

• Dust particles
• Hot Liquid
• Hot Gas
• Rock

What is a supernova?

• A formation of a galaxy
• An explosion of a huge star
• The outer portion of a black hole
• A type of star

When a Red Giant runs out of fuel, it become a:

• Supernova

• Nebula

• White Dwarf

• Main Sequence Star

What is a protostar?

• A star that has died

• A smaller than average star

• A big, blue star that is on the main sequence of the HR diagram

• A contracting mass of gas which represents an early stage in the formation of a star

What is a red giant?

• It is what happens when a star begins fusing helium into carbon.

• It is a star on the main sequence of the HR diagram.

• It is a star that has died and is no longer fusing any material.