Intro to Universal Expansion

Stars produce light and heat through _________________ fusion. In this process, two lighter elements are combined with extreme force to produce a heavier atom.

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NGSS.HS-ESS1-1

NGSS.HS-PS1-8

Stars are composed of which two elements?

• hydrogen and helium

• hydrogen and oxygen

• helium and oxygen

• iron and zinc

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NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

The _________ _____________ ____________ is the most current and widely accepted scientific theory for the formation of the universe.

• Big Bang Theory

• Theory of Evolution

• Kinetic Theory of Gases

• Theory of Relativity

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NGSS.HS-ESS1-2

Which of the following indicates galaxies and stars are moving away from each other?

• red shift

• blue shift

• green shift

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NGSS.HS-ESS1-2

Which of the following indicates galaxies and stars are moving closer to each other?

• red shift

• blue shift

• green shift

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NGSS.HS-ESS1-2

True or False:

The elements that a star is made of can be determined using the color and wavelengths that the star gives off.

• True

• False

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NGSS.HS-ESS1-2

NGSS.HS-ESS1-3

True or False:

Doppler shift can be used as evidence for the expansion of the universe.

• True

• False

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NGSS.HS-ESS1-2

The _______ is composed of everything in existence, including planets, solar systems, and galaxies.

• Galaxy

• Universe

• Solar System

• Planet

A group of celestial bodies that includes a central star and all of the objects held in orbit around it...

• Galaxy

• Universe

• Solar System

• Planet

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NGSS.HS-ESS1-4

A massive, gravitationally-bound system of stars, dust, gas, and other objects...

• Galaxy

• Universe

• Solar System

• Planet

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NGSS.MS-ESS1-2