2/13/23 Do Now

According to the big bang theory, which statement is accurate about how the universe came to be?

• Atoms such as hydrogen were destroyed.

• Stars and galaxies formed.

• It gradually warmed.

• It expanded slowly.

Tags

NGSS.HS-ESS1-2

What do scientists know about the future of the universe?

• that stars will eventually burn out causing the universe to become cold and dark

• what dark matter is made of

• why the expansion of the universe is accelerating

• that galaxies spin much slower than they should based on visible matter

Tags

NGSS.HS-ESS1-3

There is a theory that gravity could pull galaxies back together, causing a reverse big bang. Which observation makes this theory less likely than the idea that the universe may continue to expand?

• Gas giants form farther from the Sun, where temperatures are cooler.

• The expansion of the universe is accelerating.

• Galaxies exist outside of the Milky Way.

• Background radiation is present.

Tags

NGSS.HS-ESS1-2

In 1998, scientists discovered that the expansion of the universe has been accelerating.

What force is causing this phenomena?

• dark energy

• Hubble’s law

• the Doppler effect

• background radiation

Hubble’s law states that galaxies located farthest from the center of the universe are ​​ (a)   than those closest to the center and galaxies closest to the center are (b)   .

• moving faster
• moving slower
• remaining the same

The Balloon Lab Activity we completed in class is a model of which of the following?

• Hubble's Law and the Expansion of the Universe

• The Big Bang Theory and the Origin of the Universe

Tags

NGSS.HS-ESS1-2