Semester 2 - Unit 4 Study Guide

According to the big bang theory, how old is the universe?

• 14 thousand years old

• 14 million years old

• 14 billion years old

• 14 trillion years old

Tags

NGSS.HS-ESS1-2

Because the universe is expanding, what happens to light from other galaxies as it reaches Earth?

• It is brighter.

• It is dimmer.

• It is blue shifted.

• It is red shifted.

Tags

NGSS.HS-ESS1-2

Which is a result of the big bang?

• Galaxies are moving closer.

• Galaxies are moving farther away.

• Galaxies are stationary.

• Galaxies are moving randomly.

Tags

NGSS.HS-ESS1-2

Which reason proves that the universe is expanding?

• The Doppler effect shows stars with red shifted light.

• The Doppler effect shows stars with blue shifted light.

• The Doppler effect shows stars with green shifted light.

• The Doppler effect shows stars with yellow shifted light.

Tags

NGSS.HS-ESS1-2

A cloud of dust and gas in space

• an asteroid

• a nebula

• a galaxy

• a solar system

A nebula is made of _____ and _____.

• hydrogen and oxygen

• hydrogen and helium

• helium and oxygen

• carbon and oxygen

Tags

NGSS.MS-PS1-1

The solar system formed from _____.

• preexisting planets

• comets

• black hole

• clouds of dust and gas

How did the solar system form?

• The solar system began as a cloud of dust and gas that condensed, forming a bulging middle and an outer disk. The bulging middle of the cloud became the sun, and the rest of the dust and gas formed the planets, orbiting the sun in the same plane.

• About 14 billion years ago, several supernova events scattered all the known elements throughout the galaxy. The magnetic elements were attracted to each other and formed the early celestial bodies that eventually became the planets of the solar system.

• A big bang occurred in the solar system as a result of a fusion reaction. All the matter in the solar system that had been clumped together was shattered and sent flying. As new pieces of matter connected, all the celestial bodies of the solar system were formed.

• The area of the universe that was to become the solar system went through a period of vast expansion as a result of rapid radioactive decay that left behind clouds of dust and gases. The excess clouds and gases were used to form the various parts of the solar system.

Tags

NGSS.MS-ESS1-2

Which of these is a barred-spiral galaxy?

• 
• 
• 
• 

Tags

NGSS.MS-ESS1-2

Elliptical means _____.

• oval

• rectangle

• square

• bar