Galaxies 1/11 (Solar system intro)

Galaxies 1/11

(Solar system intro)

WHAT IS A GALAXY?

• A galaxy is defined as a large system of stars held together by mutual gravitation and isolated from similar systems by vast regions of space.

What are the components of a galaxy?

• Gas

• Dust

• Objects that orbit stars

• Billions of Stars

What galaxy do we live in?

• We live in the Milky Way Galaxy on an outer  arm.

• The Milky Way Galaxy has approximately 200 billion stars.

• Most of the stars in our galaxy are not visible from Earth.

Multiple Select

What is true about galaxies

• They are made up of Gas Dust Objects that orbit stars And billions of Stars

• They are made up of the entire solar system

• a large system of stars held together by mutual gravitation

• a small system in outer space that is held together with glue

• very far away from other regions of space

Multiple Choice

What galaxy do we live in?

• Snickers way

• Milky way

• Star command

• earth

What is a star?

• Stars are objects in space that emit energy in the form of visible light.

• They are made of mostly hydrogen gas and helium gas.

• They come in different colors – blue, white, yellow, red, and red-orange.

Stars continued

• Our star is the Sun and it is the ONLY star in our solar system.

• It provides energy to the planets in the form of visible light.

• 
  

Multiple Select

What are stars made up of?

• Helium gas

• sparkles

• light bulbs

• hydrogen gas

• hydraulics

Multiple Choice

Stars can be many different colors?

• True

• False

Open Ended

Which color stars are the hottest?

Open Ended

Which color stars are the coldest?

Multiple Choice

Is the sun considered a star?

• yes

• no

• only on Tuesdays

How bright is that star?

• Our sun is an average star.

• Some stars are brighter than others.  A star’s brightness is described by its actual brightness and how bright it appears to people on Earth.

• If two stars have the same brightness but one is farther away, the one that is closer will look brighter.

Open Ended

Based on what you know about the brightness of stars, Why do you think our Sun look so big?

Answer- Why does the sun look so big

• The Sun looks big to us because it is the closest star to Earth.

• (Show sizing with hand activity)

How does the Sun compare to other stars?

• The Sun is a medium-size star

•  it appears much larger than all of the other stars because it is so close to us and the other stars are very far away.

Multiple Choice

A star named Sirius appears as the brightest star in the night time sky, even though a star named Pollux actually gives off more light. Which of the following best explains why Sirius appears brighter than Pollux in our nighttime sky?

• Sirius has a different color than Pollux does.

• Sirius has different gases than Pollux does.

• Sirius is closer to Earth than Pollux is.

• Sirius is larger than Pollux is.

Multiple Choice

There are so many stars in the universe that it is hard to count them.

What is this large group of stars called?

• the Milky Way galaxy

• the universe

• the Whirlpool galaxy

• the solar system

Multiple Choice

The Sun, like other stars, is a ball of hot, glowing gas. Which statement best describes the Sun?

• The Sun is one of billions of stars in the universe.

• The Sun is one of billions of stars in the solar system.

• The Sun is at the center of the Milky Way galaxy.

• The Sun is farther from Earth than any other star.

Multiple Choice

Constellations, or patterns of light in the sky, are made up of which of the following?

• stars

• glowing planets

• comets

• meteors