Astronomy Unit 1 Study Guide

Theory that states the universe began between 13.5 - 15 billion years ago. All matter, time, and energy began to spread out from a single point due to a massive explosion.

• Big Bang Theory

• Hubble's Law

• Steady State Theory

• Newton's Theory

Tags

NGSS.HS-ESS1-2

A phenomenon that occurs when light waves are stretched out and shifted towards the red end of the electromagnetic spectrum. This happens when the source of light is moving away from an observer.

• Cosmic Background Radiation

• Time Dilation

• Red Shift

• Inertia

Scientists infer that the Big Bang occurred approximately

• (1) 4.6 billion years ago

• (2) 7 billion years ago

• (3) 9 billion years ago

• (4) 13.8 billion years ago

Tags

NGSS.HS-ESS1-2

Which information best supports the inference that the universe began with an explosion?

• measurements of rates of decay using Carbon-14

• measurements of cosmic background radiation

• calculations of the distance from the Sun to each asteroid in the asteroid belt

• calculations of the temperature and luminosity of stars

Tags

NGSS.HS-ESS1-2

The oldest and most distant light in the universe. It is leftover radiation from the Big Bang explosion.

• Cosmic Background Radiation

• Red Shift

• Hubbles Law

• Gravity

Tags

NGSS.HS-ESS1-2

Which law states galaxies that are farther away from Earth move away faster than closer galaxies. Edwin Hubble discovered this in 1923.

• Cosmic Background Radiation

• Red Shift Law

• Hubble's Law

• Inertia Law

What causes scientific theories to change over time?

• New opinions are created.

• New evidence is discovered.

• New scientists study new theories.

• Scientific theories cannot change.

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NGSS.MS-ESS3-5

Name the spiral arm the solar system is located within our galaxy.

• The Norma Arm

• The Perseus Arm

• The Sagittarius Arm

• The Orion Arm

What type of galaxy is the Milky Way?

• Irregular galaxy

• Spiral galaxy

• Elliptical galaxy

• Oval galaxy

Tags

NGSS.MS-ESS1-2

What is the primary force that keeps planets in orbit around the Sun?

• Magnetism

• Gravity

• Electromagnetic force

• Nuclear force

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NGSS.MS-ESS1-1

NGSS.MS-ESS1-2