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Sun
Our Solar System: Sun
52
Astronomy
4th Grade
01/26/2013

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Cards

Term
The sun is the center of what?
Definition
The Solar System
Term
How fast are you moving at any given time?
Definition
67000 miles per hour
Term
What are the paths by which planets travel around the sun?
Definition
Orbits
Term
What are the pieces of ice that move through space?
Definition
Comets
Term
What are the pieces of ROCK that move through space?
Definition
Asteroids and meteoroids
Term
The sun is a ____?
Definition
Star
Term
Stars are composed of what?
Definition
Hot gases
Term
How many stars are in our Solar System?
Definition
billions
Term
What is the closest star to the earth?
Definition
Sun
Term
Is the sun the biggest star?
Definition
No, its middle-sized but the biggest in our Solar System.
Term
How many Earths could stretch across the sun?
Definition
100
Term
How old is the sun?
Definition
5 billion years old also the age of the Solar System
Term
How do scientists believe the solar system began?
Definition
A huge spinning cloud of gas and dust created the sun and other planets and their moons.
Term
Many people first thought the sun was what?
Definition
A god.
Term
Greeks called their sun god what?
Definition
Helios
Term
The Japanese sun god was named what?
Definition
Amaterasu
Term
The African sun god was named what?
Definition
Liza
Term
The Egyptian sun god was named what?
Definition
Ra
Term
What were 2 creations that were built in honor of the sun?
Definition
Stonehenge(England) and Pyramids (Egypt)
Term
Who was Ptolemy?
Definition
Greek astronomer that thought Earth was the center of the solar system.
Term
Who was Copernicus?
Definition
Polish astronomer that thought that the Sun was the center of the solar system.
Term
What do telescopes use to make the sun okay to look at?
Definition
Filters keep out the Sun's harmful rays.
Term
The sun is mostly composed of what gas?
Definition
Hydrogen
Term
Hydrogen burns and turns into what?
Definition
Helium
Term
How hot is the center of the sun?
Definition
28.8 million degrees Fahrenheit
Term
The part of the sun we see is called what?
Definition
Photosphere or the surface of the sun.
Term
What does the photosphere do?
Definition
Gives off light.
Term
What is the layer above the photosphere?
Definition
Chromosphere
Term
What does the chromosphere do?
Definition
Spurts out hot gas.
Term
The outmost layer of the sun is called what?
Definition

The corona.

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Term
The corona is the sun's ________.
Definition
It is the atmosphere- a mixture of gases
Term
The corona goes to the edge of the solar system in the form of what?
Definition
Solar winds
Term
How long does it take the sun to spin once?
Definition
A little more than 25 Earth days.
Term
The top and bottom of the sun are called what?
Definition
Poles.
Term
Small dark areas of the sun are called what?
Definition
Sunspots- they appear every 11 years.
Term
What sometimes happens at sunspots?
Definition
Solar flares.
Term
What are solar flares?
Definition
Explosions of stored up sun energy.
Term
The sun provides the Earth what?
Definition
Light and heat (energy)
Term
How is energy created?
Definition
Hydrogen in the suns core turns to helium.
Term
How long does it take for energy to be created?
Definition
200,000 years
Term
How does the energy get to Earth?
Definition
Corona
Term
When is the only time you can see the corona?
Definition
During a solar eclipse.
Term
What happens during a solar eclipse?
Definition
The moon blocks the view of the sun from earth. The shadow blocks the light.
Term
What are the northern and southern lights?
Definition
Glowing, colorful solar wind
Term
Why do other planets in our solar system not have life?
Definition
Earth get just the right amount of Energy from the sun
Term
What do green plants use the sun for?
Definition
To create oxygen for people.
Term
How do scientists visit the sun?
Definition
They send special spacecraft like the Mariner 2.
Term
When was the Mariner 2 launched?
When was Ulysses launched?
Definition
1959 and 1990
Term
When was the Genesis launched?
Definition
2001 to collect solar wind.
Term
When was the Hessi launched?
Definition
Feb 2002 to study solar flares.
Term
Will the sun last forever?
Definition
No, it will grow into a red giant star and destroy Mercury, Venus, Earth, and Mars.
Term
After the sun destroys the planets what will happen?
Definition
It will collapse, become very small and be called a white dwarf star 5 billion years from now.
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