Astronomy

The largest structure in the entire Universe is the

• Universe itself.

• Orion Nebula.

• Milky Way Galaxy.

• Virgo Supercluster.

Tags

NGSS.HS-ESS1-2

What is a "light year?"

• a distance of about 6 trillion miles (9.8 trillion km)

• the distance traveled by the speed of light in 1 year

• the time traveled by the speed of light in 1 year

• a distance of about 6 billion miles (9.8 billion km)

Why do astronomers use light years as a measurement?

• because miles & kilometers are sufficient

• it's an easier way to describe huge distances

• it's an easier way to describe large objects such as stars

• because distances in space are extremely vast

The Milky Way galaxy is approximately _____ thousand light years in diameter.

• 1000

• 10

• 100

• 1

Tags

NGSS.MS-ESS1-2

NGSS.MS-ESS1-3

Which statement best describes constellations?

• indecipherable so-called "patterns" that kinda make sense

• stars that are fairly close to each other

• patterns of stars that resemble animals and/or other objects

• pattern of stars in the night sky that reflects a culture

The ecliptic describes the plane (or line) in which the Sun & the planets travel.

• True

• False

Tags

NGSS.MS-ESS1-2

_______ is/are used to find specific objects and constellations on the celestial sphere.

• Right ascension

• Azimuth

• Celestial coordinates

• Declination

Right ascension is a projection of ______ into space; declination is a projection of ______.

• the north pole, the south pole

• coordinates, azimuth

• latitude, longitude

• longitude, latitude

Tags

NGSS.MS-ESS1-1

What is the difference between the angle of measurement terms azimuth & altitude?

• altitude is only used to describe elevation

• azimuth is a "side to side" circle; altitude is "up & down"

• azimuth is a "up & down" circle; altitude is "side to side"

• both are projections of latitude & longitude

The solar day is measured from sunrise to sunrise - while the sidereal day is measured from

• star rise to star rise.

• day to night & then back again.

• sunrise to sunset.

• star rise to sunset.

Tags

NGSS.MS-ESS1-1