Astronomy Notes, part 1

Order the following celestial bodies from largest to smallest: universe, galaxy, solar system, planet, dwarf planet, asteroid.

• universe, galaxy, solar system, planet, dwarf planet, asteroid

• galaxy, universe, solar system, planet, asteroid, dwarf planet

• solar system, universe, galaxy, planet, dwarf planet, asteroid

• universe, solar system, galaxy, planet, asteroid, dwarf planet

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NGSS.MS-ESS1-3

What is a galaxy?

• A group of billions of stars, gas and dust held together by gravity

• All the matter, galaxies, stars and energy that exist

• The distance light travels in a year

• A small rocky body orbiting the sun

Tags

NGSS.MS-ESS1-2

A light year is a unit of:

• Time

• Distance

• Mass

• Energy

Electromagnetic radiation can be measured by both its frequency and its ________.

• wavelength

• mass

• volume

• temperature

Tags

NGSS.HS-PS4-1

As the frequency of electromagnetic radiation increases, its wavelength:

• Increases

• Decreases

• Stays the same

• Doubles

Tags

NGSS.HS-PS4-1

According to the Big Bang Theory, the universe started as a ________.

• singularity

• nebula

• galaxy

• black hole

Tags

NGSS.HS-ESS1-2

Which of the following is NOT one of the three proofs of the Big Bang Theory?

• Doppler Effect (red shift)

• Cosmic Microwave Background radiation

• Composition of the Universe

• Gravitational lensing

Tags

NGSS.HS-ESS1-2

The Doppler Effect describes:

• The increase or decrease in wavelength due to an object moving towards or away from an observer

• The distance light travels in a year

• The expansion of the universe

• The formation of galaxies

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-1

When an object moves away from us, the light is shifted to the ______ end of the spectrum, as its wavelength gets longer.

• red

• blue

• green

• violet

Tags

NGSS.HS-ESS1-2

NGSS.HS-PS4-1

The age of the universe is thought to be approximately 13.8 billion years old.

• True

• False

Tags

NGSS.HS-ESS1-2