Earth Science Section 29.1 Homework, Structure of the Sun: Due Thursday, 4/19/12

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Read Section 29.1, pages 755-760. Answer the questions that follow.

Here is the link to the video you need to watch to answer question # 5. You need to be off campus to watch it.

http://www.youtube.com/watch?v=3JdWlSF195Y

Here is the link you need to answer question #7.

http://imagine.gsfc.nasa.gov/docs/science/mysteries_l1/corona.html

Last Name, First Name *

Period (Do not put nd, rd, or th after the number!) *

What makes a star a star? *

The fact that they undergo nuclear fission in their cores

The fact that they undergo nuclear fusion in their cores

The fact that they burn charcoal in their cores

The fact that they are generally made of Hydrogen, Helium, Carbon, and Oxygen

Plasma is defined as *

a state of matter where motion of atoms is highly energetic and electrons are ripped away from the atom

a state of matter where atomic motion is very slow

a state of matter where atoms flow freely, but retain their electrons

a state of matter where atoms have some kinetic energy and make a liquid

In a plasma, the atoms are *

attracted to each other

repelled from each other

moving so fast that they eventually fuse

both options 2 and 3 are correct

According to the formula Energy = mass x the speed of light squared, mass is converted in to *

light

heat

energy

options 2 and 3 are correct

options 1, 2, and 3 are correct

Listen to the song about the Sun that is linked at the top of this homework. Name 4 things you learned from the video and lyrics that are correct and 1 thing that is scientifically wrong. Make sure to turn up your speakers! *

Which part of the Sun carries photons (energy) away from the radiative zone and up to the photosphere? *

Corona

Chromosphere

Convection Zone

Core

Read the story from the second link above. Why is it that the corona of the Sun is way hotter than its photosphere? *

What significance does the number 99.9% have with respect to the solar system? *

It is the amount of carbon dioxide in the atmosphere of Venus relative to other gases

It is the amount of mass made up by the Sun with respect to all of the other solar system bodies

It is the percentage of all currently known life in the solar system that lives on planet Earth

It is the likelihood that Earth will be struck again by an asteroid in the geologic future

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