Holiday HomeWork

Click Here For Your Holiday Gift!

Make sure to answer ALL of the questions, both multiple choice and short answer, into your Science Notebooks.  Do Not write the questions; only write the answers into your notebooks.  I will be collecting Science Notebooks on Monday during D.E.A.R. and checking to see if you have completed the Holiday HomeWork; we will be grading them together on Tuesday (620 on Monday, 6').

Happy Holidays!

Mr. C

States of Matter

Water is a unique substance because it can take each phase of matter, solid/liquid/gas, on the planet Earth.
Solid - ice, snow
Liquid - oceans, rivers, lakes, drinking water
Gas - water vapor, steam, clouds

States of Matter video

http://videos.howstuffworks.com/discovery/29388-assignment-discovery-states-of-matter-video.htm

Matter can come in three forms: solid, liquid and gas. And it can undergo change in three different ways: physical, chemical and nuclear. Learn more about matter on Discovery Channel's "Assignment Discovery."

Chapter 4 - States of Matter

Phase Change diagram   

 

The motion of particles helps to explain the phases (states) of matter.   

molecules of solid            molecules of liquid                     molecules of gas

States of Matter

Matter is anything that has mass and takes up space.  Our food, drinks, homes, pens, and even our bodies are made up of matter.  There are three states or phases of matter that are important to us: solids, liquids, and gases.

Solid water = ice             Liquid water = fluid water   Gaseous water = water vapor

Chapter 4 – States of Matter Presentations  

Chapter 4 – States of Matter Presentations

You will be learning about the states of matter.  It will be your group’s job to master your content area.  You will read your section in the textbook and research your content on the internet. 

Focus points: movement/motion of molecules, examples in our daily lives, how they affect us, movement or transition of thermal energy.

Each group will make:

1.  a visual presentation of their material (e.g. slideshow, poster, physical examples, mini-lab, etc.)

2. a written summary of their subject matter; one page typed (250 words typed). Each group member will attach their contribution to the final paper. 

3. three test questions about their material

Each person must contribute to their presentations; failure to do so will result in the group losing a letter grade.

Group 1 – Solids

Group 2 – Liquids

Group 3 – Gasses

Group 4 – Solids & Liquids

Group 5 – Liquids & Gases

Group 6 – States of Matter Graph

Work and Simple Machines

Simple Machines  

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A simple machine is a machine that does work with only one movement.

•The six simple machines are the inclined plane, lever, wheel and axle, screw, wedge, and pulley.

 

 

1) Inclined plane

 

2)  Lever

  

 3) Wheel and Axle

 4) Screw

5)  Wedge

6) Pulley

 

Posted Tuesday, November 23, 2010 12:30 PM by MrC | 0 Comments

Chapter 3 - Work and Simple Machines  

1) Text pp. 74-76, 78; vocabulary, blue Q/A, reading check, self check # 1, 5,6  

2) HW – p. 76 – practice problems #1,2

3) pp. 80 – 84, self check #1; Find 3 examples of a machine making work easier: changing direction, changing distance and changing force.

4) Read pp.  85 – 91; vocabulary, blue questions, reading check.

5) Text p. 95 – visualizing main ideas

pp. 96-97 - # 4, 6-9, 11, 12, 14, 18, 20, 22, 25, 26

Posted Wednesday, November 17, 2010 1:05 PM by MrC | 0 Comments

Work = Force * distance  

W = Fd

Work (Joules) = Force (Newtons) x distance (m)

 

 

 

Energy and Energy Resources

Check out this cool website!

 http://tonto.eia.doe.gov/kids/

Fossil Fuels - Coal, oil and natural gas, are a non-renewable source of energy. Formed from plants and animals that lived up to 300 million years ago, fossil fuels are found in deposits beneath the earth. The fuels are burned to release the chemical energy that is stored within this resource.Energy is essential to moden society as we know it. Over 85% of our energy demands are met by the combustion of fossil fuels.

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Coal

 

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Oil

 

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 Natural Gas

 

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Wind energy is mainly used to generate electricity. Wind is called a renewableenergy source because the wind will blow as long as the sun shines. 

Wind machines use blades to collect the wind’s kinetic energy. The wind flows over the airfoil shaped blades (turbine) causing lift, like the effect on airplane wings, causing them to turn. The turbine is connected to a drive shaft that turns an electric generator to produce electricity.

With the new wind machines, there is still the problem of what to do when the wind isn’t blowing. At those times, other types of power plants must be used to make electricity.

 

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Solar Energy 

The sun has produced energy for billions of years.  Solar energy is the sun’s rays (solar radiation) that reach the earth. Solar energy can be converted into other forms of energy, such as heat and electricity.  Solar energy is an inexhaustibleresource.

Solar energy can be converted to thermal (or heat) energy and used to:

• Heat water – for use in homes, buildings, or swimming pools.
• Heat spaces – inside greenhouses, homes, and other buildings.

 

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Hydroelectric Power - Hydroelectricity is electricity generated by hydropower, i.e., the production of power through use of the gravitational force of falling water. It is the most widely used form of renewable energy.

 

Geothermal Energy 

The word geothermal comes from the Greek words geo (earth) and therme (heat). So, geothermal energy is heat from within the earth. We can use the steam and hot water produced inside the earth to heat buildings or generate electricity, by use of a turbine spinning a generator. Geothermal energy is a renewable energy source because the water is replenished by rainfall and the heat is continuously produced inside the earth.

Nuclear Power - Nuclear power is any nuclear technology designed to extract usable energy from atomic nuclei via controlled nuclear reactions. The most common method today is through nuclear fission, though other methods includenuclear fusion and radioactive decay. All utility-scale reactors^[1] heat water to produce steam, which is then converted into mechanical work for the purpose of generating electricity or propulsion. Today, more than 15% of the world's electricity comes from nuclear power, more than 150 nuclear-powered naval vessels have been built, and a few radioisotope rockets have been produced.

Chapter 2 Vocabulary

Chapter 2 Vocabulary  

 Hello Students! 

Please make sure that you understand the following vocabulary words.  Remember to put them into your Science Notebook Glossary! 

Chapter 2 Vocabulary

energy, kinetic energy, potential energy, thermal energy, chemical energy, radiant energy, electrical energy, nuclear energy, law of conservation of energy, generator, turbine, nonrenewable resource, renewable resource, inexhaustible resource

Posted Thursday, November 04, 2010 2:46 PM by MrC | 0 Comments

*Online Energy Quiz*  

http://tonto.eia.doe.gov/kids/energy.cfm?page=quiz

Go to this website and take the quiz.  Record the answers in your notebooks and receive 5 extra points on your next notebook check!

 

Potential and Kinetic Energy  

 

Posted Monday, October 25, 2010 8:03 AM by MrC | 0 Comments