Astronomy 8

Select all of the true statements about the Big Bang Theory

• It was an explosion with sound and light

• It started with a ball of all of the universe's matter and energy

• It occurred 4.5 billion years ago

• The universe expanded from the size of an atom to the size of a galaxy within a second

Tags

NGSS.HS-ESS1-2

What was there before the Big Bang?

• Scientists don't know for sure

• Nothing

• An entirely different universe

• Space

Tags

NGSS.HS-ESS1-2

True or False: The Big Bounce is the theory that there could have been a universe before the one we know today

• True

• False

The Big Bang Theory is supported by evidence such as Hubble's Law and Cosmic Background Radiation. Earn a point for explaining what Hubble's Law is and earn another point by explaining how it supports the Big Bang Theory.

Tags

NGSS.HS-ESS1-2

Order the following solar system formation events from what happened first (1) to last (5)

• We have the solar system we know today

• Elements start to collect to form the sun and the planets

• The nebula starts to spin faster

• The nebula starts to collapse

• The nebula starts to flatten out into the protoplanetary disk

Why is the sun so big?

• 99.8% of all of the material from the protoplanetary disk accumulated here

• It's made of the heaviest materials in the solar system

• It is made of gases that over time, expanded due to having free space

• Because of all of the chemical reactions that take place in the sun, it continues to expand

Select all of the alternatives names to the "outer planets" (Jupiter, Saturn, Uranus, Neptune)

• Jovian Planets

• Gas Giants

• Terrestrial Planets

• Rocky Planets

Select all of the common characteristics of the inner (terrestrial) planets

• Have the layers: crust, mantle, core

• Have evidence of once having geologic activity (volcanoes, earthquakes)

• Once had ice rings that have since melted

• Have ice at the center of their cores

Select all of the qualifications for an object in our solar system to be a planet

• It orbits the sun

• It is so large that it has enough gravity to force it into a spherical shape

• It has cleared its own path

• Its obit is nearly a perfect circle

• It has at least one moon

1 day on Mercury is the same amount of time as 58 days on Earth. 1 year on Mercury is the same as 88 Earth days.

Identify the number of Earth days it takes Mercury to complete a revolution: