Science 6
No Description
MORE DECKS TO EXPLORE
PRESENTATION OUTLINE
WHAT IS AN ASTRONOMICAL UNIT?
a unit of measurement equal to 149.6 million kilometers, the mean distance from the center of the earth to the center of the sun.
Photo by NASAblueshift
WHAT IS FUSION?
the process or result of joining two or more things together to form a single entity.
Photo by Marcus Sümnick
WHAT IS THE SUN?
The Sun is the star at the center of the Solar System. It is a nearly perfect sphere of hot plasma, with internal convective motion that generates a magnetic field via a dynamo process.
Photo by NASA Goddard Photo and Video
HOW CAN THE MASS OF THE SUN BE CALCULATED?
Knowing the mass and radius of the Earth and the distance of the Earth from the sun, we can calculate the mass of the sun (right), again by using the law of universal gravitation.
Photo by 401(K) 2013
WHAT GASES COMPOSE THE SUN?
The Sun is a huge, glowing sphere of hot gas. Most of this gas is hydrogen (about 70%) and helium (about 28%). Carbon, nitrogen and oxygen make up 1.5% and the other 0.5% is made up of small amounts of many other elements such as neon, iron, silicon, magnesium and sulfur.
Photo by NASA's Marshall Space Flight Center
WHERE IS MOST OF THE ENERGY THE SUN PRODUCES FORMED?
THE CORE.
WHAT IS THE AURORA BOREALIS?
- The Aurora is an incredible light show caused by collisions between electrically charged particles released from the sun that enter the earth's atmosphere and collide with gases such as oxygen and nitrogen. The lights are seen around the magnetic poles of the northern and southern hemispheres.
Photo by Visit Finland
WHAT CAUSES THE AURORA BOREALIS?
- Bottom line: When charged particles from the sun strike atoms in Earth's atmosphere, they cause electrons in the atoms to move to a higher-energy state. When the electrons drop back to a lower energy state, they release a photon: light. This process creates the beautiful aurora, or northern lights.
Photo by NASA's Marshall Space Flight Center
HOW DOES THE THE SUN PRODUCE ENERGY?
- The sun produces energy through nuclear fusion. The sun is a large ball of hydrogen and helium undergoing constant nuclear fusion, in which atoms of hydrogen combine to form helium and release a large quantity of energy.
Photo by Pablo Daniel Zamora
WHAT DOES EACH LETTER STAND FOR?
Photo by Manoj Kengudelu
