Created by CJI Second Grade Class March 2007 Milky Way: Milky Way We live in the galaxy called the Milky Way. It is round and flat, like a Frisbee. The sun and the planets are near the edge of the galaxy. To travel from one edge to the other of the Milky Way, you would travel for 100,000 years. Slide3: The sun is the center of our universe. It is so big that one million earths could fit inside. The sun is constantly exploding. Sun Mercury: Mercury Mercury is the closest
planet to the sun. The planet
is really hot or really cold. It is
rocky. Mercury is gray
and has a surface filled with
craters. It would not be nice
to live on Mercury.
Slide5: Venus is the second planet from the sun. It is almost as big as the earth. Venus has thick, acid, yellow clouds. Venus has volcanoes and mountains. Slide6: Earth is the third planet from the sun. It has water and air. Earth is the only planet that can support life. Moon: Moon The moon orbits the earth. It does not shine
but reflects the sun’s
light. In 1969, Astronaut Neil Armstrong was the first
human to step on the surface of the moon. Slide8: Mars is the fourth planet from the sun and is made of rock. It is covered with red rocks. Mars is half as big as the earth. There are lots of volcanoes and craters on the surface. Mars is called the red planet. It is covered with red rocks, volcanoes, and craters. There is no life on Mars. This planet has two moons, is about one-half as big as the earth and is the fourth planet from the sun. Jupiter: Jupiter is the fifth planet from the sun. It does not support life. It is the biggest planet in the solar system. It has a Giant Red Spot. Jupiter Red Spot: Red Spot The Great Red Spot on Jupiter is really a storm that is twice as wide as our planet and at least 300 years old. Saturn: Saturn Saturn is the 6th planet from the sun. It has beautiful rings. It is gold, brown, and white. Saturn has more moons than any other planet, at least 18. It is the second biggest planet and is really cold. Saturn is a gas giant. Uranus: Uranus Uranus is a very cold, gas planet with a rocky core. It is the 7th planet from the sun. It has 11 thin rings. Uranus is about 4 earths across. It has 21 moons. Slide13: Neptune is the eighth planet from the sun. It has eight moons and is surrounded by blue clouds and dark rings. Neptune is a ball of gas with a metal core. It is super cold. It was first observed in 1846. It is the size of 4 earths across. Slide14: Pluto is the smallest planet in the solar system. It is the ninth planet from the sun. Pluto is a frozen ball of gas. Atmosphere: Atmosphere Earth is the only planet that has an oxygen-rich layer all around the outside. Air that we can breathe surrounds the earth so that we can live anywhere we choose. Gravity: Gravity Gravity is the reason that we do not fall off the earth. Gravity keeps planets in their orbits around the sun. Slide17: This planet will rotate. When a planet rotates, it is actually spinning. Rotation Orbit: Orbit An orbit is a path that a planet takes as it is traveling around the sun. Slide19: There
sun. Stars are huge balls of burning gas. Slide20: When a star explodes,
it is actually dieing.
It is as if the elements in the
center of the star are arguing and suddenly explode! Slide21: For centuries, constellations have been used as guides by travelers. A constellation is a group
of stars that form a
picture. The most famous constellations in our sky are the Big Dipper, Little Dipper and North Star. Craters: Craters A crater is formed when a meteorite hits a planet or the moon. A big impression is left that usually has a bowl shape. Who turned out the lights?: Who turned out the lights? When, on its journey around the Earth, the Moon gets into just the right alignment, it passes directly between the Sun and the Earth. The result is a blocking of the Sun’s rays as the Moon slides in front of it. It is as if someone is slowly moving his or her hand in front of a light bulb. Slide24: A Satellite is a spacecraft launched into orbit around the Earth. Satellites send and receive from telephones, fax machines, the Internet, and computer. Because of satellites, we can send information around the world. Scientists also use satellites to forecast the weather by taking very good pictures about moving storms. Slide25: Asteroids and Comets Asteroids are small chunks of rock and metal floating through space. A comet is a great chunk
of ice and rock flying
through space at an incredible speed. It is a dirty snowball that can be as big as
150 miles wide. Slide26: A meteor is a small chunk of rock or metal that is burning as it falls through the Earth’s atmosphere. It makes a brilliant streak of light and is sometimes called a shooting star. Meteor Astronauts: Astronauts Astronauts are brave men
and women who travel to
the unknown. Slide28: I would like to thank my students for creating the slides for this presentation. They are great scientists!
Thanks! Mrs. Rudolph
Brooke Woods Second Grade Scientists: Second Grade Scientists Resources: Resources Driscoll, Michael. (2004). A child’s introduction to the night sky. New York, NY: Black Dog & Leventhal.
Frank, M. S., Jones, R.M., Krockover, G. H., Lang, M. P., McLeod, J. C., Valenta, C. J., & Van Deman, B. A. (2005). Harcourt science. Orlando, FL: Harcourt School.
Scott, C., & Twist, C. (2002). 1001 facts about space. New York, NY: Dorling Kindersley.