Science - Galaxy, Solar System, and Planets Day 2

Galaxy, Solar System, and Planets - Day 2

TODAY’S TARGET: Recognize that a galaxy consists of gas, dust, and many stars, including any objects orbiting the stars.

Multiple Choice

Which of the following is not a part of a galaxy?

• gas

• dust

• stars

• The Universe

​I. Galaxies are made up of STARS

• The Sun is the star at the center of our solar system. The word “solar” means sun.

  • The Sun is a medium‐sized yellow star.

• Orbiting the Sun are eight planets.

  • Many of those planets have one or more moons.

  • There are also asteroids and comets that orbit the Sun.

    • Comet - "dirty snowball" with a tail

    • Asteroid - Rock and Metal

Multiple Choice

The word “solar” means _______.

• star

• sun

• planet

• soar

Multiple Choice

Where are asteroids found?

• Between Earth and Venus

• Between Jupiter and Saturn

• Between Saturn and Uranus

• Between Mars and Jupiter

Multiple Choice

Which of these is known as a "dirty snowball"?

• asteroid

• comet

• meteor

• meteorite

Multiple Choice

The shape of comet's paths are ________________.

• circular

• elliptical

• irregular

Multiple Choice

Which of the following best describes an asteroid?

• It is made of ice and dust

• It is also known as a "shooting star"

• It has a nucleus, coma, and tail

• It is a LARGE chunk of rock and metal

​II. Stars produce their own light.

• Planets and moons do not produce light.

  • Planets and moons reflect the light of the Sun.

    • When you see the moon in the sky, the moon is not producing light: it is reflecting the light of the Sun.

      • As the moon travels in its orbit around the Earth, the shape of the moon appears to change as the side reflecting the light of the Sun sometimes faces Earth, and sometimes away from Earth.

Multiple Choice

Stars _________ light.

• reflect moon's

• reflect their own

• produce their own

• reflect planet's

Multiple Choice

Planets and Moons _____________ light of the Sun.

• make their own

• reflect

• create

• avoid

​When the Sun is in the sky, it is so bright that we cannot see the other stars in the sky. They are still there. They can’t be seen because the Sun is so bright. At night, the Sun is not in the sky and other stars become visible. Stars don’t only produce light, they also produce other forms of energy that we feel as heat.

Multiple Choice

Stars don’t only produce light, they also ______________

• move closer to earth

• rotate around planets

• reflect light

• produce other forms of energy that we feel as heat.

Multiple Choice

The sun is a star

• True

• False

Multiple Choice

Stars are composed of _____________.

• solids

• liquids

• gases

• water

Multiple Choice

Stars emit which two forms of energy?

• fire and ice

• fire and heat

• heat and light

• light and fire

III. Our Sun is so bright because it is so close to Earth.

• All of the other stars that we can see are so far from Earth that we can see only points of light. Each of those points of light is a star, and many of those stars have planets of their own.

  It is only recently that scientists have been able to provide evidence that many stars have planets around them. More of these star systems are discovered every year.

Multiple Choice

Some larger stars seem smaller in our night sky because ________________.

• they are closer to from Earth

• they are farther away from Earth

• they are just tiny specks in the universe

• they are like the Sun

Multiple Choice

Galaxies are composed of 

• billions of stars

• a star and the planets that orbit around it

• all of the bodies and objects in space

Multiple Choice

Why does the sun feel so hot and look like the brightest star in our sky?

• It is yellow.

• It is the biggest star.

• We can see it in the daytime.

• It is the closest star to earth.

Multiple Choice

Peter has learned that many stars are actually larger than the sun. If this is true, why do these stars appear like tiny points of light in the night sky?

• These stars are hotter than the sun.

• These stars are farther away from Earth than the sun.

• These stars have less mass than the sun

• These stars are made of different chemicals than the sun.

Because other stars are so far away, it is not possible to travel to them right now. At some time in the future, new technology might make it possible to travel to these stars. All of the stars that we can see are part of a galaxy called the Milky Way galaxy. Galaxies are collections, or clouds, of gas, dust, stars, and any objects that orbit the stars.

Multiple Choice

All of the stars that we can see are _______________.

• part of a galaxy called the Milky Way galaxy.

• super sized stars

• the size of the sun

• rotating around the Earth

Multiple Choice

A galaxy consists of gas, dust, and many stars, including any objects orbiting the stars. Which of the following objects orbit stars?

• a planet

• a solar system

• a galaxy

• The Universe

Multiple Choice

The shape of the Milky way is a _________________.

• circle

• irregular shape

• flattened disc

• solar system