Lab Safety

You guys did a wonderful job on your skits. We will film and download them when our netbooks get back. We need to keep safety first everytime we step into the lab. Below is a webbing or concept map that one of the classes created. It is not all-encompassing, but it covers the majority of the rules. One rule that we must never forget is to REPORT ALL ACCIDENTS IMMEDIATELY!!! I have had students clean up spills improperly and put broken glassware in drawers without telling me. These can be potentially dangerous situations. And finally, most accidents are not truly accidents. What I mean is that when something is spilled or broken or directions are not followed, it is because someone..somewhere is not doing the right thing. We are in the lab a lot so BE SAFE!!!!

Download file "bubblus_labsafety.jpg"

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Welcome 2010-2011

I am excited about the new year. We will be having so much fun that our class time will fly by. By now most of you all know that everyone calls me Mrs. Jarvie. This is my 7th year of teaching and I find every new year brings me new knowledge. My philosophy in teaching science is that science is a process. The expansion of this philosophy is such that science is as much about how you get the answer as it is the answer itself. I know what you are about to ask: Does this mean that all the anwers on a test are correct? Well that would be a "NO". There are right and wrong answers in science class. However, in the world outside the testing aspects of class, often there are numerous answers to a question. I want you to succeed in 8th grade science as well as prepare yourself for everyday problem solving. These problem solving skills will help you be a better employee, boss, and even family member. Keep in touch with the blog this year. I will have lots of informaiton on it.

I would like for you to give me some information on you now please. Leave me a comment telling me how you solve problems. Do you like to think awhile about them before you begin to find the solutions? Or are you more spontaneous and like to just jump in and try to solve it immediately?

Leave your comments in the comment section below.

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Forensics Unit /CSI

Welcome to the exciting world of Forensics. This world has been opened to us by Horatio, Dr. Langston and others. Hollywood distorts everything a bit. It is amazing how they can find all sorts of evidence, analyze it and find the murderer within a two hour time frame!!! Today I want us to look at the real aspects of evidence gathering and analyzing. What would you be looking for if you were the expert and how would your procedures go? First of all I want you to write down 5 things you would look for at the crime scene.
Now how do they actually gather the evidence? You will be referring to the following website to find how the evidence is found. Please refer to the website to find the five types of search patterns that they use in order to find evidence. There are pieces of butcher paper on your tables that will be used to sketch and label each pattern.
http://science.howstuffworks.com/csi3.htm
Now find the list of things the investigators look for and the questions they ask about the scene. Did any of those match your five questions?
Find the most interesting question listed (in your opinion) and let me know what it was in the comment section.
We studied blood spatters on Monday. Passive drips are those caused only by gravity. Projected blood spatters are more distorted and are created with a force behind them. Transfer would be blood being dragged or moved by the suspect or another being (example; hand smear).
What about those fingerprints we took of each of you as you came into the room? Each of them are different and that is another type of evidence that is widely used in forensics. Now we will take time to try to match a few of them!!!
Now go back to the above website and go to the section #5 , "Evidence Collecting". Scroll down to the Fingerprint section and find the three types of fingerprints and the three methods of recovering them. Type these into the comment section. Make sure to include your partner's names in the comment.
If we have time we will go into DNA analysis also.
http://library.thinkquest.org/28599/courtroom.htm

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Constellations

http://www.astro.wisc.edu/~dolan/constellations/ Please refer to the attached website and do the work as follows:

List the 26 brightest stars.

Look up three constellations and give the following information for each:

Abbreviation

Translation

Stars used in the Constellation

Also look it up on the Star Chart to see what it looks like.

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Advertisement

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Website for Trees

http://texastreeid.tamu.edu/content/texasEcoRegions/MountainForest/
This website is for the G/T students and their project. We will be doing plant identifications at the nature trail next to the elementary school today. You will be using this website to help you identify the leaf and flower samples that you bring back.

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Mission Patches

Before you begin your patches, make sure that your power point is complete and saved in your network folder. If you are using an ACER, you must save your power point in the MicroSoft format. Do as follows:
"Save As"
Go to second block and down arrow to MicroSoft Power Point 97/2000/XP
Press "Save", "Yes", and "Keep Current Format"
This should save your Open Office in a MicroSoft Format. If you cannot accomplish this, please make sure that you save it in your network folder and I will help you with it on Friday.
Now that you have completed that part of your assignment, begin work on your patch. I have linked a website that shows you examples of actual NASA Mission Patches. Please make sure that your mission patch symbolizes your journey to Earth in some manner (for example, how you traveled, what your spacecraft looked like, who you traveled with and what your mission is to accomplish). Have fun with this, but you are not to say things such as "My mission is to annihilate all Earthlings" .
http://history.nasa.gov/shuttle_patches.html
If you misbehave and do not actually work on what you are supposed to work on, then Mr. Broyles has worksheets to keep you busy!!!!
Have a great day...see ya tomorrow!!!!
Look up an actual NASA mission and tell me what they accomplished for extra credit!!! Leave me a comment on this blog.

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Alien Academy Continues

Advertisements for your planet!!!!! You are required to make a one slide advertisement for your planet. It must have 5 facts from your planet and an interesting slogan. Make them colorful and exciting..remember, you want me to come see you!!!
Rubric:
Slogan 20 points (10 points for completion) (1-10 points for interest level)
Facts 50 points (10 each)
Graphics 10 points (Do you have at least two pictures? 5 points)
(Do you have your wording in an interesting arrangement? 5 points)
Coloring 5 points
Completion of project on time: 15 points
You can get 5 extra points for your advertisement if you send me a comment regarding my weight. If I (Mrs. Jarvie) weighed 140 on Earth, would I gain or lose weight when coming to your planet? How much would I weigh? . http://www.exploratorium.edu/ronh/weight/
Send your comments to my blog.

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Objective 3 Forces and Motion (6th/7th review)

Types of energy: Light or radiant energy comes from the sun. Plants take that energy to help created their food through chemical energy. As animals eat plants and other animals, that energy is converted from chemical (eating) to mechanical (moving their body) energy. Turning on a light converts electrical energy to light energy. Gasoline in a car goes through a chemical process(chemical energy) and helps the care move (mechanical energy). Often heat is produced during these conversions and that is called thermal energy. The following website reviews all types of energy.
http://tonto.eia.doe.gov/kids/energy.cfm?page=about_forms_of_energy-forms
We need to review simple machines also. Remember that machines do not chance the amount of work. what they do change is the size and/or direction of the force needed to do the work. Go to the following website to play with the simple machines.
http://www.cosi.org/files/Flash/simpMach/sm1.swf
Now please make comments on how you use simple machines everyday.

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Objective 5 Continued

http://www.kidsknowit.com/interactive-educational-movies
http://www.woodlands-junior.kent.sch.uk/time/moon/phases.html
Review your moon phases and eclipses!!!!!! Please send me a comment about how you can remember these. Wax on/Wane off. Crescent is the shape and it looks like a fingernail, crescent dinner roll or a banana!!!! Gibbous has much more light and means "hunchback".

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Objective 5 Continued

http://www.learner.org/interactives/rockcycle/
We are reviewing the rock cycle and the tectonic plates today.
The Rock Cycle has three main types of rocks. They are named because of how they are formed.
Sedimentary: compaction and compression (packing down)
Metamorphic: (changing) heat and pressure
Igneous: melting and cooling
The above website will allow you to interactively review the cycle.
Next we will review Plate Tectonics. Remember the plates are the part of the lithosphere (top layer of the earth including the crust and top layer of the mantle). These plates "float" on the more fluid asthenosphere. The idea that all the continents were at one time a supercontinent named "Pangea" is called the Plate Tectonic Theory. They came up with this theory because of the way the continents look like they could match up like a puzzle and also with fossil evidence. There have been fossils found on different continents that could match up as pieces of the puzzle.
We have three types of boundaries in these plates:
Convergent: collide Continental to Continental gives you mountains. Continental to Oceanic gives you subduction zones (trenches).
Divergent: divide Seafloor spreading creates ridges (Mid Atlantic Ridge) and on the continents rifts (African Rift) are formed
Transform: slided Earthquakes are often found along these boundaries. Review the below website.
Please send me a comment if you have any questions.
http://www.learner.org/interactives/dynamicearth/plate.html

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Objective 5

http://www.epa.gov/climatechange/kids/version2.html
ttp://www.scitrip.com/nitrogen_cycle_animation.shtml
http://earthguide.ucsd.edu/earthguide/diagrams/watercycle/
This objective covers all the systems and cycles of Earth and Space. That is a tremendous amount of information. Today we are going to review the water cycle, nitrogen cycle and the carbon cycle. Look at the following websites and do the interactive activities. Then draw the diagrams in your notes. If the websites do not have an easy diagram, then look at the workbook and copy those on pages 108 (nitrogen) and page 110 (carbon).

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Objective 4 Energy

This objective covers forces and Newton's Laws. Potential and Kinetic energy are a big part of the energy scene. Remember that potential energy is stored energy and kinetic energy is energy in motion. Three things effect the amount of kinetic energy: speed, mass and position. Take about 5 minutes to design a roller coaster on the attached website. http://www.learner.org/interactives/parkphysics/coaster/result.php3 Remember that the roller coaster has the highest peak as the first one. That is because potential energy has to be built up so the force of gravity can convert or change potential energy to kinetic energy. The roller coaster's greatest potential energy will be at the highest peak. The greatest kinetic energy will be greatest at the bottom of the downhill run. So kinetic energy has to do with the speed, mass and position of the object.
Write this down in your review notes: Potential - stored energy Kinetic- energy of motion Kinetic energy depends on mass, speed and position. The greater all three of these are, the more kinetic energy there will be. Review Newton's Law's in the section "Newton's the Man"

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Objective 3


Matter is anything that has mass and takes up space. There are three states of matter: solids, liquids and gases. Draw a picture of the three states on your notes after writing "Objective 3 - Structures and Properties of Matter" for your next heading. If you run out of paper, just get another sheet of copy paper and continue. The pictures should show a solid with the particles very close together. The liquid should be a bit farther apart, and the gas particles will be spread out.

All matter is made up of atoms, Atoms are the smallest particle of matter. You will now scroll down this BLOG until you find the section titles "Atomic Structure" and the video with Hope, Clay and Mandy leading our atom cheer. Click on the video that reads "Atomic Structure Models2.avi". After that please take a sheet of notebook paper and complete the quiz above that of the atomic structure. Turn that into your substitute.

You will watch the other videos together at the end of class.


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Objective 2




All systems are made up of different parts, such as an ecosystem or an organism. Living organisms are made up of cells. Some organisms are single-celled and some are multicellular. Plant and animal cells are similar, but not completely the same. Organisms have levels of organization as seen in the attached power point. If all systems of the organism are functioning or working properly, then the organism is balanced or in a state of equilibrium (also referred to as homeostasis). The body has to adjust to different conditions such as sweating when too hot or shivering when too cold. If the organism cannot maintain homeostasis then it will either adapt or die!!!! Just watrching LIFE on TV and there is an alkali fly that has a special adaptation. They live in a very salty lake. Its special adaptation is to create an air bubble around its body so that it can have air while eating the algae underwater. Pretty crazy!!!!!!!!
Download file "Single-Celled and Multicellular.ppt"

Now we need to look at the levels or organization within an ecosystem. An ecosystem must include the living (biotic) and nonliving (abiotic) parts of the environment.

An ecosystem is made up of communities of organisms and and their nonliving environment.

A community is made up of different types (populations) of living organisms such as plants and animals interacting in the environment.

A population is made up of a group of the same species living together in the same area.

Look at the following website and list the biomes or ecosystems in your folder. Click on each to make sure you know what they are.

http://library.thinkquest.org/11353/ecosystems.htm

Before leaving this blog, list the levels of organization for cells all the way to the ecosystem in your folder. Also make sure you describe equilibrium and homeostasis.

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Objective 1 Review



The nature of science is how you look at the world around you. Science is ever changing so the processes that you use to "figure things out" are very important. These processes can help you decide what to wear, what food to eat and even what car to buy. Learning to work through a problem is very important. We are going to review the scientific process quickly.

Make Observations/Ask Questions

Create a Hypothesis around your Questions (What do you think will happen)

Test your Hypothesis

Make sure to Report your Conclusions (Sometimes this will mean graph the results)

When we try to figure out problems, we must do some testing. Sometimes this testing requires work in the laboratory. Now we are going to review lab safety procedures. Please watch the following video.


When reporting conclusions, often we must use a graph. There are three main types of graphs; pie chart (percentages), bar graph (comparing quantities or amounts of different things) and line graphs (using pairs of numbers like speed and time).


Download file "Pie Charts - Percentages.ppt"

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Personalities of the Universe

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We will be looking at the different personalities of the universe through cartoon characters drawn by the students.

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Alien Academy




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Newton is the Man


Sir Isaac Newton is the "Man" of physics. We take what he says as the "Law". Actually we take what he says to create three laws. We demonstrated these laws in class with different labs.
1st Law : An object in motion wants to remain in motion due to it's inertia. An object at rest wants to remain at rest due to it's inertia. However, when an unbalanced force acts upon that object it will move if it is at rest, or it might stop if it is in motion. For instance, if you are arm wrestling with someone and neither arms are moving, then it is a balanced force. However, when one person applies a greater force on the other, movement occurs. Also, if you are silly enough to ride in a vehicle without a seatbelt and the car stops, you will possibly go flying through the windshield. You and the car are going at the same speed. If the car stops and you are not a part of it (as you would be if you were buckled in) you will continue at that same speed until gravity pulls you down. This law is also known as the Law of Inertia. We did the spinner lab and the rolling ball lab to demonstrate this law.
2nd Law: I have a 500 lb gorilla that I am trying to transport or move from one cage in the zoo to another. I also have a 40 lb chimpanzee that needs moving. I am going to put both of them in nice, comfortable crates (with wheels) and have my workers help me move them. We are going to need about 10 workers to move the gorilla, but only 2 to move the chimpanzee. Why, because of the mass. In order to accelerate each crate at the same rate, we must apply more force to the more massive object. Force = Mass x Acceleration
3rd Law: For every action there is an opposite and equal reaction. This is how we get our astronauts into space. As the pressure of the rocket presses down on the ground, there is an equal action pushes the rocket the opposite way (into the sky). We demonstrated this with our balloon races. As the air goes out the back of the balloon, the balloon moves forward.


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Rocks Rock

We are currently working on the rock cycle. We have learned that the three main rock types are IGNEOUS, METAMORPHIC, and SEDIMENTARY.
SEDIMENTARY ROCKS--The two key words are cementation and campaction. These processes occur after weathering and erosion has created sediment from larger rocks. Remember we created our own edible rocks by using peanut butter as our cement. Marshmallows represented rocks, chocolate chips represented fossils and sugar was our dirt and sand. Then we pressed the bread and various other ingredients down and cut them in half showing the layering of the rock. Sedimentary rock is the only rock that will have fossils in them.
METAMORPHIC ROCKS - The two key words here are heat and pressure. The sedimentary rocks get pushed farther down into the earth and change due to the heat and pressure. They do not melt, but morph instead. Ribbonlike features can be seen in these rocks.
IGNEOUS ROCKS - The two key words here are melting and cooling. As metamorphic and sedimentary rocks go deeper into the earth they get hotter and melt. The pressure builds and they push their way to the earth's surface. Igneous rocks that are under the surface are called intrusive. Those that make it to the surface are extrusive. The magma reaches the earth's surface and becomes known as lava. If these rocks cool quickly they become like glass because no crystals had time to form. The slower the cooling process, the bigger the crystals.
SIX CHARACTERISTICS : Glassy surface and gas bubbles (igneous)
Sand/ Pebbles and fossils (sedimentary)
Crystals (igneous and metamorphic)
Ribbons ( metamorphic)



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