The Big Bang Theory

What revolves around what? #1 revolves around nothing.

• Moon

• Earth

• Black Hole

• Milky Way Galaxy

• Sun

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HS-ESS1-A-3

Reorder the following:

• Gravity began pulling the leftover bits of dust together to form planets and moons.

• The energy began to disturb the cloud and gravity caused the cloud to collapse in on itself and form a disc.

• The center of the disc became hot and pressurized enough to form a star: the Sun.

• Near the Sun, the rocky planets of Mercury, Venus, Earth, and Mars formed, then the ice and gas planets of Jupiter, Saturn, Uranus, and Neptune after.

• A star went supernova. The explosion transferred energy to a nearby cloud of gas and dust.

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HS-ESS1-A-3

The universe is EXPANDING! This means that:

• all of the galaxies are spreading out or MOVING APART.

• the universe must have started from many points around the universe.

• the universe is getting HOTTER

• all of the above.

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HS-ESS1

Which SCIENTIST was responsible for finding the Big Bang Theory?

• Georges Lemaître

• Albert Einstein

• Sir Isaac Newton

• Edwin Hubble

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HS-ESS1

(a)   discovered that the universe is (b)   , which means that it must have begun at a (c)  

• Edwin Hubble

• expanding

• central point.

• contracting

• Georges Lemaître

• star

• burning up

Answer explanation

The correct answer is Edwin Hubble, who discovered that the universe is expanding, which means that it must have begun at a central point.

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HS-ESS1

Most scientists believe the Big Bang Theory explains which of the following questions?

• How our planets and moons formed

• How our universe began

• How the sun turns hydrogen into helium

• How fast light travels through space

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HS-ESS1

What are two vocabulary terms from this lesson that really stuck with you?

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HS-ESS1

How do you think the galaxy was formed?

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HS-ESS1-A-3