Year 10 Science Exam Revision - Origins of the Universe

List the objects in order from largest to smallest.

• Stars, Galaxies and Planets
• Galaxies, Stars and Planets
• Planets, Stars and Galaxies

What is a galaxy?

• a star and its surrounding planets

• billions of stars, dust and gas held together by gravity

• the big bang

• a cluster of nebulas

Space and all the matter and energy in it.

• Space
• Solar System 
• Universe
• Sun

Tags

NGSS.HS-ESS1-2

NGSS.HS-ESS1-3

A relatively large spherical body that orbits a star and has a clear path around its neighbourhood.

• Star

• Planet

• Moon

• Dwarf Planet

Which piece of evidence supports the Big Bang theory?

• The more distant galaxies are moving the slowest away from us

• The more distant galaxies are moving the quickest away from us

• The more distant galaxies are moving towards us

• Galaxies and space is not changing

Thought to be leftover thermal energy from the "big bang" and fills the entire universe.

• Redshift

• Cosmic Microwave Background Radiation

• Hubble's Law

• Doppler Effect

Once a star burns all its Hydrogen it begins to burn Helium and becomes a ____________.

• Main Sequence Star

• Giant/Supergiant

• Supernova

• White Dwarf

A light year is...

• The speed light travels
• How long it takes light to get to you from the sun
• The distance light can travel in a year
• How many years it takes light to be emitted

Which star has the lowest temperature?

• A

• B

• C

• D

Which star has the lowest luminosity?

• A

• B

• C

• D