COMPONENTS OF THE UNIVERSE - feb.13

Which of the following best describes a galaxy? A galaxy is -

• a particle of debris in the solar system that does not act as a satellite of any planet.

• a visible body of liquid or frozen crystal droplets suspended above a planetary surface

• a massive system of stars, gas, dust and dark matter bound together by gravity.

• the visible path of a meteoroid as it enters Earth’s atmosphere.

Tags

NGSS.MS-ESS1-2

Stars are made mostly of which two elements?

• hydrogen and helium

• mercury and strontium

• iron and potassium

• krypton and bismuth

Tags

NGSS.HS-ESS1-3

A cloud of primarily Hydrogen gas that fuses into multiple stars.

• Galaxy

• Nebula

• Universe

• Solar System

The H-R diagram classifies stars based on what factors?

• Temperature and luminosity

• Number of planets

• What constellation they're in

• Temperature and fusion

Stars that are brighter are usually...

• Hotter

• Bigger

• More massive

• Smaller

Tags

NGSS.HS-ESS1-3

What color represents a cool star

• Blue

• White

• Red

• Yellow

What is this section of stars known as?

• Main Sequence

• Red Giants

• White dwarfs

• Blue/Red Supergiants

Tags

NGSS.HS-ESS1-3

The temperature of the star is measured in what?

• Fahrenheit

• Celcius

• Kelvin

• Kilometers

• Newtons