Static Electricity

What Is Static Electricity?

Static electricity happens when two objects are rubbed together, this only happens when one object has negative charges and the other has positive charges, and so when rubbed together it creates static electricity. Some examples of when static electricity happens is when wool is on plastic or if the soles of your shoes are on the carpet.

Uses Of Static Electricity

1) Dust Removal - Some appliances such a s air purifiers that can eliminate dust from the air. They use static electricity to alter the charges so that they stick to the filter of the purifier that has opposite charges as well as the dust.

2) Photocopy - They use static to make ink get attracted to the areas where we need information copied. Charges are used to apply ink only to the area where the paper to be copied is darker.

3) Car Painting - To make sure the paint will resist the high speeds and weather to protect the cars metal interior it is applied with static charge.

Body Building

1) Do muscles push or pull?

Muscles pull

2) What happens when one muscle of the pair contracts?

The other one relaxes

3) In what ways is this model accurate?

It shows how our arm bones move

4) In what ways is this model inaccurate?

it doesn't show all our bones

How your lungs work?

- When breathing in or inhaling oxygen your ribs are pulled up and out by muscles. Then your diaphragm is pulled down by muscles making the chest volume bigger.

- When breathing out or exhaling carbon dioxide your muscles start to relax. Your diaphragm relaxes and your chest volume gets smaller.

Brainpop Videos

Smoking:

Tobacco is the main ingredient of a cigarette. NIcotine is the addictive chemical in the cigarrete. Your lungs take in oxygen and take out carbon dioxide. Smokers who try to play sports develop shortness of breathing and cramps. The color of a smoker's lung is more likely to be black because of all the nicotine and chemicals. Cancer,and heart attacks are the long term illnesses that smokers have to deal with. It is difficult to quit smoking because of the nicotine inside the cigarette. Smoking can cause a deadly disease which is lung cancer.

Asthma:

Asthma is a common condition for the lungs. An asthma attack is similar to a heart attack. The direct cause for an asthma attack is swelling and excess mucous in the airways. Inhalers can help people with asthma overcome their attacks because the chemicals in the inhaler make the passage ways to your lungs clear. Living close to a smokestack would be dangerous for people who have asthma. Asthmatics should always carry their inhalers with them because intense stress and anger can cause a asthmatic.  

Respiratory System Workshet

2. Pharynx - Larynx - Trachea - Bronchi - Bronchioles - Alveoli.

3. Esophagus.

4. The hairs in your nasal cavity that push the dirt into the nose. These hairs are called "Cilia".

5.
a) Bronchioles (c)
b) Palate (d)
c) Trachea (b)
d) Alveoli (a)
e) Epiglottis (i)
f) Pharynx (g)
g) Expiration (h)
h) Diahragm (f)
i) Pleura (e)
j) Tidal Volume (j)

6.
B. The muscles between the ribs contract to move the ribs cranially and laterally
D. The diaphragm contracts and flattens
E. The lungs expand to fill up the space created
A. The air pressure in the air tight pleural cavities decreases
C. Air is drawn down the trachea into the lungs

7.
a) True
b) False
c) True
d) True
e) True
f) False
g) True

The Mouth

Saliva begins in your mouth as soon as you smell,taste or even think about food. When you eat food, the saliva breaks down a little bit of the chemicals of the food and make it easier to go through the esophagus. Your tongue helps by pushing the food around while you're chewing with your teeth. When the food is all ready to be swallowed, your tongue pushes a small piece of chewed food, which is usually called bolus, towards the back of your throat and into the opening of the esophagus where the second part of the digestive system process takes place.

Healthy VS. Unhealthy

To decide or see if food is healthy or unhealthy you always have to check the the label to see how many calories or fiber is in that food and you have to check the salt content and fat content. A good example of healthy foods are fruits and vegetables because they have a very low number of calories and high percentage of fiber and they don't have fat or salt content. Their also very healthy because they supply your body with protein and vitamins which is essential to a good diet. A healthy diet is when all your food is balanced like in the food pyramid. An unhealthy diet would be an very high amount of saturated fats, sugars and salts.

Digestive System - Notes

Mouth:

1.  Mechanical digestion – making food into small pieces à easier digest

2. Saliva – chemical digestions à carbohydrates à sugar

                                       Amylase à rice and bread

Slimes, food à slide down the esophagus

 

Esophagus:

Squeezes your food down to stomach.

 

Stomach:

1. Mechanical digestion – churning food

2. Stores food

3. Chemically digest protein – meat

         - Makes acid to help break apart protein (meat)

         - Enzyme pepsin

 

Small Intestine:

Fats – bile from liver/ enzyme lipase  

Proteins - finished being digested – pepsin

Carbohydrates – finished being digested enzyme amylase

Digested food à protein, carbohydrates, fats go into your blood

 

Pancreas:

1. Makes all of your digestive enzymes that go into the small intestine

2. Makes insulin à which causes your cells to suck up the sugar in your blood

 

Liver:

1. Makes bile, which goes to the small intestine to help digest fat

2. Filters your blood

 

Large Intestine (Colon):

-       Stores undigested waste food

-       Absorbs all your water

Why is McDonalds Food Unhealthy?

Eat too many calories makes you fat - 1 big mac meal

More saturated fats ^ Animal fats – blocks up your arteries

Cholesterol à Animals à blocks up your arteries

Too much sodium (salt) à Increases blood pressure

Newton's Laws Of Physics

1 - objects in motion will remain in motion unless a force acts on it.

Feel the Force Questions

What is a Force?
-Force is the physical power or strength by a living being.

Give four examples and explain:-
1. Gravitational (Weight) ex. All objects close to the Earths surface fall toward the surface.
2. Friction (Make an effort to move) ex.Magnets
3. Tension (Moving with rope/string) ex. a rope being pulled by each end
4. Air Resistance (Help with air/wind) ex.Balloon

What units are forces measured in?
-Force is measured in newtons.

What is the equation that is used to calculate a force?
-The equation for calculating force is:-
F= M x A

( Force = Mass (x) Acceleration ).

Worksheet

Work and Machines

1. a) Using a force to move an object.

b) A machine is anything, which makes it easier to do work.

2. a) Yes, because your using force to movie this object.

b) No, because your not using force while brushing your teeth.

c) Yes, because your using force while pushing down on the pedals.

d) No, because your not using force while reading a page.

 3. You must eat if you’re going to keep working because if your body is not filled with food you loose the energy in your body and if you keep loosing energy you’ll eventually break down or faint.

 4. They are called machines because it makes it easier to do work.  

     Pulleys, Gears and Other Wheels

 1.     To make a pulley system you need a set of pulley wheels and a rope.

2.     It is easier for a mechanic to list a car engine using a pulley system because he can lift a whole engine by just pulling a rope and that’s easier than carrying it with your bare hands.

3.     a) The chain transmits the force to the back wheels, turning them.

     b) The cycle’s gears change the number of times that a turn of the crankshaft turns the back wheels.

4.     The difference between high and low gear is that in high gear the chain runs over the small cog wheel at the back, but in low gear the chain now has to run over the large cog wheel at the back.

Building a Pyramid

1.     a) Wedges

b) Flat bottomed, barge like boats

c) Ramps

2.     a) The friction was reduced when the blocks were moved because they need to pull the block back up the ramp that caused a lot of friction they just had to put it in place.

b) The crane

3.     Picture in a separate piece of paper.

4.     They are used in construction sites to lift heavy objects like bricks or stone.

5.     A lot of force had to be used to lift the last block to the top of the pyramid.

Erin Brocavich - One World

This photo relates to one world because it shows a canal filled with polluted water and this water is polluted because of hexavalent chromium. Which was what poisoned the people in the movie Erin Brocavich.  

Plant Questions and Wordle

 

 

1)   What is a vascular plant?

Vascular plants go by the system of tubes to transport nutrients and water into their leaves through the process of photosynthesis.

 

2)   What structures do all vascular plants share?

The structures that all vascular structures share are their cellular levels, conduct photosynthesis, happens in chloroplast with the help of chlorophyll molecules, same structures called roots, stems and leaves.

 

3)   What are the roots designed to do?

Roots are designed to pull water and minerals from whatever material the plant sits on.  They support the plants in the form of an anchor in the soil.

 

4)   What are the two jobs of the stem?

The two jobs of the stem are transporting food and water and acting as a support structure.

 

5)   What are the jobs of the xylem vessels?

The jobs of the xylem vessels are that it transports cells that circulate water and dissolved minerals and they also support the tree.

 

6)   What does the phloem transport?

Phloem transports the sap that comes out of a tree.

 

7)   What is the job of chlorophyll?

The job of chlorophyll is capturing light from the sun.

 

8)   In photosynthesis, what molecules combine together to form what compounds?

Carbon dioxide and water combine with light to create oxygen and glucose. That glucose is used in various forms by every creature on the planet.

Food Web in the Sagebrush-Steppe Ecosystem

1)

a - Squirrels and other small rodents, insects, pronghorn and other grazers.

b - Badger and raptor

c - Bats, lizards and small reptiles

d - no one 

2) The coyote eats lizards and other reptiles who also eat insects, so this will effect both animals because there will be a lot more of them. The mountain lion would be affected because i also eats the pronghorn and other grazers. 

3) If there was an increase in mountain lions there would be a lot less pronghorns and other grazers around because they are the only animal that the mountain lion eats.

4) The effects the mesquite trees would have on the ecosystem is they take so much water form the soil that plants won't be able to grow quickly. However they are edible so they would be very useful to humans and they also produce seed pods which are eaten by animals and they're good because they put nutrients back into the soil. So the only down part is for the plants.