# Like this study set? Create a free account to save it.

Already have a Quizlet account? .

# Create an account

### Astronomy is the study of the sun, moon and planets.

Astronomy is the study of ___?

### The Earth rotates on its axis.

Does the Earth rotate or revolve on its axis?

### The Earth revolves around the sun.

Does the Earth rotate or revolve around the sun?

### The earth's axis is tilted at about 23.5 degrees.

What is the tilt of the Earth's axis?

### The Earth spins on its own axis at about 1,600 mph.

How fast does the Earth spin on its axis? (how many miles per hour?)

### The Earth travels through its orbit around the sun at about 108,000 mph.

How fast does the Earth travel through its orbit around the sun? (how many miles per hour?)

### The time it takes for the Moon to spin on its axis is about EQUAL to the time it takes the moon to travel around the Earth.

How long does it take for the moon to spin on its axis when compared to the time it takes for the moon to travel around the Earth?

### False: An eclipse happens when a shadow is cast on some other body. (like the moon)

True or False: An eclipse happens when a shadow is cast on the sun.

### December 21-22 is winter solstice.

When is Winter Solstice?

### Summer solstice is June 20-21

When is Summer Solstice?

### The two days of the year that have UNequal amounts of daylight and nighttime are called solstices.

The two days of the year that have UNequal amounts of daylight and nighttime are called ____ ?

### Partial eclipses occur in the Penumbra.

A partial solar eclipse occurs in the ____? (penumbra or umbra)

### Total eclipses occur in the Umbra.

Total eclipses occur in the ___? (Umbra or Penumbra)

### The two days of the year that have equal amounts of daylight and nighttime are called equinox.

The two days of the year that have equal amounts of daylight and nighttime are called ______ ?

### This is a crescent moon.

What moon phase is this? (crescent or quarter)

### This is a quarter moon.

What moon phase is this?

### This is a gibbous moon.

What moon phase is this?

### The Earth's orbit around the sun is an oval shape.

What shape best describes the Earth's orbit around the sun? (circle or oval)

### false; The Earth's seasons are mostly caused by the tilt of the Earth's axis.

The Earth's seasons are mostly caused by the moon orbiting around the earth. (true or false)

### The Autumnal Equinox is in September.

When is the Autumnal (fall) Equinox? (June, March, December, September)

### The Vernal Equinox is in March.

When is the Vernal (spring) Equinox? (June, March, December, September)

### This is true.

True or False: When it is fall in the northern hemisphere, it is spring in the southern hemisphere.

### This is true.

True or False: A solar eclipse is followed about 2 weeks later by a lunar eclipse.

### False: Total solar eclipses happen equally to lunar eclipses.

True or False: Total solar eclipses happen more than total lunar eclipses.

### The moon has a side that we never see, which should be called the 'far side'.

Does the moon have a 'dark side' or a 'far side'?

### False; when we see a full moon, we are only seeing 50%, or half of the moon lit up by the sun.

We are seeing 100% of the moon's surface lit up by the sun when we look at a full moon. (true or false)

### Look at the north axis; the left is closer to the sun so it would be summer, the bottom would be fall, the right would be winter since the north axis is pointing away from the sun and the top would be spring. *Tip* Always find summer and winter first!!

Can you label this diagram with the seasons for the northern hemisphere? (summer, fall, winter, spring)

### When the Earth casts a shadow on the moon, it is a lunar eclipse. (The moon has a shadow. Moon = lunar)

When the Earth casts a shadow on the moon, is it a solar or lunar eclipse?

### When the moon casts a shadow on the Earth, interfering with the sun it is a solar eclipse. (Shadow on earth = solar)

When the moon casts a shadow on the Earth, interfering with the sun, is it a lunar or solar eclipse?

### Sun is at the bottom, so: bottom = new moon, to the right is the waxing crescent, then the 1st quarter. At the one o'clock part is the waxing gibbous then the full moon is at the top. To the left of the full moon is the waning gibbous, then the 3rd quarter moon. At the seven o'clock part is the waning crescent.

Can you label the 8 moon phases? (1st quarter, full moon, new moon, 3rd quarter, waning crescent, waning gibbous, waxing crescent, waxing gibbous) *Make sure you look for the sun!! In THIS case the sun is at the BOTTOM of the picture.

### Flickr Creative Commons Images

Some images used in this set are licensed under the Creative Commons through Flickr.com.
Click to see the original works with their full license.

Example: