Revision Universe for Formative

1. Definition of Astronomy

• A group of stars forming a recognizable pattern that is traditionally named after its apparent form or identified with a mythological figure.

• Science which deals with celestial objects, space, and the physical universe as a whole.

• Growth or increase by the gradual accumulation of additional layers or matter.

• Radiation remaining from the Big Bang explosion and fills the whole of the Universe

The Big Bang occured

• 4.6 billion years ago

• 13.7 million years ago

• 4.6 million years ago

• 13.7 billion years ago

What does the Big Bang Theory say?

• All of the matter in the Universe exploded from a tiny, dense point

• Two galaxies collided causing a big bang

• The universe is collapsing and getting smaller

• The universe was created in its current location

Which of the following is NOT evidence of the Big Bang Theory?

• CMBR everywhere

• Stars that are blue shifted

• The universe is getting bigger

• Abundance of Hydrogen and Helium

A galaxy that is moving away from Earth will show

• a blue shift in the spectrum

• a red shift in the spectrum

• a decrease in brightness

• an increase in light years

When two or more atomic nuclei join together to form a single heavier nucleus (powers the stars). This is known as

• Differentiation

• Nuclear fusion

• Accretion

• Supernova

Accretion can be defined as

• Any 2 objects gravitationally attracting more matter to each other

• The expansion of a star

• Layers forming due to different densities

• Any 2 objects gravitationally repelling more matter away from each other

What is the order of the order of the big bang theory?

• Big bang, inflation, first nuclei, first atoms, first galaxies, formation of solar system, Life on earth, present day

• Big bang, first atoms, first galaxies, first nuclei, , Life on earth, present day

• Big bang, Star explosion, Gravity established, dark matter created, solar system, earth formed

• The big explosion, inflation, first nuclei, present day, first atoms, first galaxies, formation of solar system, Life on earth

Which of the following is the correct timeline for the solar system formation?

• Supernova, Accretion, Nuclear fusion, Nebula collapses, Sun & planets formed

• Nebula collapses, Supernova, Accretion, Nuclear fusion, Sun & planets formed

• Supernova, Nebula collapses, Accretion, Nuclear fusion, Sun & planets formed

• Nebula collapses, Supernova, Accretion, Sun & planets formed, Nuclear fusion

Which planets have high mass, low density

• Jupiter, Mars, Venus, Earth

• Mercury, Venus, Earth, Jupiter

• Mercury, Venus, Earth Mars

• Jupiter, Saturn, Uranus, Neptune