Download Unit A, “Processes of Living Things”

Chapter Outline
Unit D, “The Solar System and Beyond”
Chapter 2, “The Sun and Other Stars”
Lesson 1, “What Are the Features of the Sun?”, pgs. D30 – D35
Energy from the Sun
The sun is Earth’s ______local star______________, which means …
It is the star at the center of the solar system
The sun is the source of almost all ________energy_______ on Earth. Give three
examples.
1.Plants take the sun’s energy and turn it into food energy
2. Organisms that died long ago have become fossil fuels
3. The sun is the source of wind and other weather
Where does the sun’s energy come from?
It comes from the fusing, or combining of smaller particles into larger ones (hydrogen
into helium)
The sun is a huge ball of gases, mostly _______hydrogen________ and
________helium_______.
The sun releases energy as …
Light and heat
What is fusion?
When hydrogen particle fuse, or join together, to produce helium
Give three examples of waves (the energy from the sun):
1. Infrared waves (heat)
2. Radio waves
3. Ultraviolet waves
Exploring the Sun
The sun is large enough to hold …
1 million Earth’s
The layer at the center of the sun is called the ______core_________.
The next layer of the sun, moving from the center, is called the __________radiation
zone__________.
The sun’s outer layer is called the _____convection zone_______________.
Define Photosphere – the surface of the sun
Define Corona – the sun’s atmosphere
Solar Features
Bright spots on the photosphere are called _____granules__________.
Define Sunspots – dark spots on the sun
Define Solar Flares – brief burst of energy from the photosphere
Define Solar Wind – a fast-moving stream of particles thrown into space
A sun feature similar to a solar flare is called a _______solar
prominence_____________. Explain.
A bright loop or sheet of gas in the corona