Crash Course Astronomy

When the Moon is 90^o from the Sun, though it appears half full, we call that phase

Tags

NGSS.MS-ESS1-1

A complete moon cycle takes _____.

• 29.5 days

• 365 days

• 180 days

• 7.25 days

Tags

NGSS.MS-ESS1-1

The words "elliptical", "irregular" and "peculiar" are used to classify galaxies based on ___

• behavior

• shape

• location

• mass

Compared to our Sun, how much more energy is blasted out by 3C273, the brightest quasar in the sky?

• 4 thousand times

• 4 million times

• 4 billion times

• 4 trillion times

What appears to be at the heart of every big galaxy we see?

• a pulsar

• a quasar

• a bar of blue stars

• a huge black hole

The flat disk of material that swirls around a black hole at ferocious speeds is called ___

• an accretion disk

• a spiral drain

• a whirling conduit

• an accumulation saucer

In which direction do active galaxies launch beams of matter and energy?

• in random directions

• along a single radius of the disc

• in the plane of the disk

• along the poles of the disk

Our Milky Way is part of a small knot of a few dozen galaxies that we call ___

• the Narrow Knot

• the Local Group

• the Small Aggregation

• the Regional Cluster

Tags

NGSS.MS-ESS1-2

The spectrum of the Andromeda Galaxy is blue-shifted, which means it's ___

• approaching us

• receding from us

• expanding

• contracting

Tags

NGSS.HS-ESS1-2

Located about 50 million light years away, what is the nearest galaxy cluster to us?

• Abell 2065

• the Hydra Cluster

• the Centaurus Cluster

• the Virgo Cluster