Show:
solar system
Characteristics of Stars
Lives of Stars
Star Systems & Galaxies
100

What is the center of the solar system?

What is the center of the solar system?

100

An imaginary pattern of stars.

What is a constellation?

100
All stars begin as this.
What is a nebula.
100
Two or more stars are know as?
What is a star system.
200

what is a star in our solar system?

The sun is a type of this gas sphere that gives off light and heat.

200
Name three characteristics used to classify stars.
What is color, temperature, size, composition, and brightness.
200
What determines how long a star will exist?
What is its mass. Stars will more mass live shorter than stars with less mass.
200
A huge group of single stars, star systems, star clusters, dust, and gas bound together by gravity.
What is a galaxy.
300

It takes the earth 365 days to do this.

What is revolve (orbit) around the sun?

300
Why do astronomers use spectrographs?
What is to determine the chemical composition of a star.
300
What happens when a star runs out of fuel?
What is it becomes a white dwarf, a neutron star, or a black hole.
300
Describe the three types of galaxies.
What is spiral (pinwheel), elliptical (flattened ball) and irregular (no regular shape).
400

This is how long it takes the earth to complete one rotation.

What are 24 hours --or one day?

400
Compare and contrast absolute and apparent brightness.
What is apparent brightness is how bright the star is from Earth. Absolute brightness is the brightness of a star if it were at a standard distance from Earth.
400
What will happen to the sun when it runs out of fuel? Explain.
What is its outer layers will expand and it will become a red giant. Eventually, the outer layers of the red giant will drift into space and the remainig hot core will be a white dwarf.
400
What is the name of our galaxy?
What is the Milky Way.
500

It takes this many minutes for sunlight to reach the earth.

8 minutes 

500
What is a parallax?
What is the apparent change in postion of an object when viewed from different places.
500
What is a black hole and how can it be detected?
What is an object with gravity so strong that nothing, not even light, can escape. Astronomers can detect black holes indirectly. Gas near a black hole is pulled so strongly that it revolves faster and faster around the black hole. Friction heats up the gas and X-Rays can be detected.
500
Why do astronomers use scientific notation?
What is to describe sizes and distances in the universe since those numbers are often very large or very small.