Components of the Universe

Which of the following shows all wavelengths of the electromagnetic spectrum that are used to gain information about the components of the universe?

• Radio, infrared, and visible light

• Radio, infrared, Ultraviolet, and X-rays

• Radio, infrared, visible light, ultraviolet, and X-rays

• Radio, infrared, visible light, ultraviolet, X-rays, and gamma rays

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-4

Characteristics used to classify stars include:

• distance, size, and color.

• size, distance, and brightness.

• color, brightness, and distance.

• size, brightness, and temperature.

The Hertzsprung-Russell diagram shows that main-sequence stars:

• are mostly hot and dim.

• are mostly cool and bright.

• increase in brightness as they increase in temperature.

• decrease in brightness as they increase in temperature.

A star is born when:

• a nebula expands

• helium and oxygen combine

• nuclear fusion starts

• a protostar begins to cool

All matter and space that exists is called the

• galaxy

• planetary system

• universe

Which discovery(ies) came from our understanding redshift/ blueshift?

• The universe is expanding

• Most galaxies are moving away from us

• Andromeda galaxy will collide with the Milky way in 3.75 billion years

• All of the above (and many more)

Match the term with its definition

• Light year

• A measurement equal to the distance that light travels in a year

• Universe

• A giant ball of burning gases that gives off light

• Nebula

• All of space and the matter and objects within it

• Star

• A very loose mass of cosmic dust and gases

• Galaxy

• System of stars, dust, and gas held together by gravity

Tags

NGSS.MS-ESS1-2

This has less mass than the Universe but more mass than a nebula.

• Galaxy

• Moon

• Planet

• Star

Tags

NGSS.MS-ESS1-3

Universe

• a huge system of millions of billions of stars, together with gas and dust held together by gravity

• a huge burning sphere of gas fueled by nuclear fusion that produces light

• a huge cloud of dust and gas in space held together by gravity

• all of space and everything in it

Tags

NGSS.HS-ESS1-2

The Milky Way galaxy is an example of a(n)

• spiral galaxy

• globular cluster

• elliptical galaxy

• irregular galaxy