The universe

Which of the following describes the lifecycle of a star about the size of the sun?

• interstellar hydrogen clouds → planetary nebula → main sequence star → red giant → protostar → white dwarf

• interstellar hydrogen clouds → protostar→ main sequence star → red giant → planetary nebula → white dwarf

• interstellar hydrogen clouds → protostar→ main sequence star → red supergiant → neutron star

What does the constant 2.2 × 10^-18 s^-1 represent?

• 1 light year

• Red-shift

• The CMBR

• The Hubble constant

Which of the four possible shapes of galaxies shown could be the Milky Way?

• 
• 
• 
• 

How many years would it take light to travel from the center of the Milky Way to the outer edge?

• 500 years

• 50 000 years

• 100 000 years

• 100 000 light years

Which of the following equations represents the age of the universe?

• t

• Ho

• v/d

• d/v

The Andromeda galaxy is 2.5 million light-years away from Earth. What is the value of the galaxy as it moves away from Earth?

1 light year ≈ 9.5 x 10¹⁵ m

The Hubble constant ≈ 2.2 x 10¹⁸ s^-1

• 5200 m/s

• 52 km/s

• 5.2 km/s

• 520 km/s

Which of the terms below best describes the spectrum of hydrogen from the distant galaxy?

• reflected

• red-shifted

• four-shifted

• blue-stretched

. How does the data collected from starlight support the Big Bang Theory? It shows that…

• most objects in space are moving away from one another

• the universe is collapsing again

• the Big Bang happened slowly over millions of years

• most of the light from objects in space is “blue shifted”

Our galaxy is known as the ____

• 1. Large Magellanic Cloud

• 1. Andromeda

• 1. Milky way

• 1. Small Magellanic Clouds

What is universe?

• Everything in our solar system

• The Earth, Moon and our neighboring planets

• Everything that exist

• Everything in our galaxy