Friday, May 22, 2015

Flooding notes

Today we are finishing our notes on flooding. Then we will be talking about what Manitoba government is doing to prevent flooding.

The volume of the water that flows past a particular point during a set amount of time.
How much water is moving compared to regular times.

Sea level
The height of the water at a particular point compared to the standard sea level.
How high/deep the water is compared to regular times.

Tracking the flood
Hydrograph is a graph used to show changes in a river's discharge over time.
Can help predict how future floods will behave(amount of water,length,etc.)
The area downstream will flood for longer period of time.
It takes longer for all of the water to flow past the end point
   -small stream/river are affected faster then larger bodies of water
   - changes are noticeably faster since they are small to begin with

Thursday, May 21, 2015

Flod notes

Drainage basins

  • the area where all the precipitation accumulates is called a drainage basin

  • the boundary in between basins is called a drainage divide

  • rain falling on one side of the divide goes into one basin, where the rain falling on the opposite side goes into a different basin

  • anytime there is t much precipitation in one drainage basin then there well be a flood

  • can result from: melting snow, hail, rain water, ice storm or any other combination  

Tracking the Flood

  • organisations track early flooding to help plan

  • what dams or flood ways need to be built

  • what areas are not good for building

  • what areas need food relief credits ($)

Wednesday, May 20, 2015

class of floods

pros and cons of flooding
pros                                                            cons
-water for people who need it                    -people can die
-give soil different nutrients                         -loss of land
-more fish                                                   -loss of crops
-more beavers                                             -trees can die
-                                                                  -take nutrients out of soil
-                                                                  -loss of houses


drainage basins
-land is not flat there is always some chang in the land
  -how high or low the land is.
precipitation will flow from highest elevation to the lowest elevation

Wednesday, April 29, 2015


    Today in science we continued on are notes about how much water we have, use, what country has the most, and the country that has the least. 
    71% of the world is covered by water, while 97.5% is salt water and 2.5% is fresh drinking water. if we run out of fresh water we will need to pay to disstile the salt water too fresh water to drink.
    The top 5 countres with the highest mount of fresh water is -Brazil -Russia -Canada -USA -Indonesia, the 5 countres with least amount of water is -Bahrain -Qutur -Malta -Maldives - Nevis. The average person drinks and uses about 80 to a 100 gallons of water. And that's what we leart in are notes about fresh water.

Monday, March 09, 2015

Ocean Tides

What Are Tides?
~The rise & fall of ocean water.
                -Caused by gravitational activity

~The highest tide movements appen when the earth, moon and sun line up

                 -Highest gravitational pull
                 -Called spring tides
                 -Only on a full moon or new moon

~The smallest tide movements happen when the sun and the moon are at right angles to one

                  -Little change
                  -Called neap tides

Thursday, February 19, 2015

New Unit!

    Today in science we started a intro about are new unit the Water System. In this unit we are going to be learning about what happens to rain when it falls, were does water in your taps come from and will earth one day run out of water.
This is a video we watched today it shows how much water is needed to make one burger.
This is a good pictue we used to show us how the water cycle works.

Monday, February 02, 2015

Through the eye of Bill Nye

This morning in science we watched a Bill Nye video about eyes, and filled out the following questions. (answers are in Blue)

1. Nerves connect the eyeballs to the Brain.
2. The iris controls the amount of light that goes into our eye.
3. The eye gets protection from the eyelid /eyebrow
4. The optic nerve is about 20cm long.
5. If the eye is out of focus then images appear blurry.
6. The lenses changes shape so the eye can focus.
7. Rods and cones are the cells/nerves that make the image on the retina.
8. Cones allow the eye to see colours and bright light.
9. Colourblindness means there is plenty/not enough of light sensitive pigments on the retina.
10. Being blind doesn't stop people from doing things like walking and playing.
11. The eyes turn in to see how far away or ow close an object is.
12.If you lose an eye a doctor can make a(n) artificial.
13. Above the eyelid are the glands that produce tears.
14. An optical illusion is your brain and playing tricks on you.
15. the eyeball is the size of a ping pong ball.

Wednesday, January 21, 2015

Colours in Grade 8 Science!!!

Today in Science we talked about colour to review and practice for our test sometime in Feburary!
 We talked about Primary,Secondary and Complimentary colours.

The three Primary Colours are Red,Green and Blue.
If you mix two together you get a Seconday Colour.

The Secondary colours are Cyan,Magenta and Yellow.
Cyan is made of green and blue, missing red.
Magenta is made of red and blue,missing green
Yellow is made of red and green,missing yellow.

We are also talking about Colour Filters,
(ex)Start with a red filter, followed by a green filter.
The green filter only transmits green light...
But no green light gets through..
the light will appear black!!
We also did practice with white boards on Colours and Objects.

Solve this: What happens when a red object is hit by a green light?

Tuesday, January 20, 2015

reflexing clours

hello!, today we are talking about colours reflexing off of another colour and makes a diffrent colour.

Monday, January 19, 2015

today in Science we are contuining our notes about colors.

Complimentar Colors:

- A secondary colour and a primary colour and
create white light when mixed together.

-Red+Cyan = white light

-Green+ Magenta

-Blue  +  Yellow

Example #1

Example #2:

If a red onject is hit by green light it creates yellow light

Wednesday, January 14, 2015

How We See Colour

Today in science class we reviewed are How We See Colour - Ted ed video. In this video it talked about how your eye's see colour, it explains that you only see three colours, red, green, and blue. here is the Ted ed videos we watched.


Tuesday, January 13, 2015

How We See Color

Green and red light mix to form yellow because light is a wave and two different frequency shouldn't interact with another.

Light perception happens in a paper thin layer of cells called the retina.

Light detecting cells are cones and rods.

 You cant see colors in the dark because the rod cells in your retina take over in low light.

The first step to understanding the phenomenon of color is to think about it as a wave.

We call the repetitive motion of a wave a periodic motion.

When you are measuring the period of a wave you are measuring how long it takes for a wave to go through a full range of motion.

White objects will reflect all colors of light and black objects will absorb them.


Color spectrem (2015) Uploaded by windows. Available online @


Friday, January 09, 2015

i was picked to blog today i wish i was'nt but ill live.
we also got a PRIZE!!!!!!for getting 2000 veiws on our blog, it is sticker and a movie.
so keep coming to our blog so we can have another prize.
we watched a video on forms of light.
How it works
- created by a chemical
-chemical energy is turned into light energy
-created by high temperature 
 -created by absorbing uv light energy
-needs constant energy
 -absorbing light energy
-keeps giving off light after energy is taken away
 -created by a chemical reaction
-two chemicals mixed together makes it glow
Energy source
Heat created
 -about 4600 degrees f
Life span
 -1,000 to 2,000 hours
-10,000 hours 
 -3 to 4 hours

Wednesday, January 07, 2015


Today in our science class we are talking about Fluorescence, Phosphorescence and Chemiluminescence lights.

- The creation and emission of light by absorbing UV light energy from another object.
- Needs consistent enrgy to work.
(ex) Fluorescent light bulbs.

- The creation and emission of light by ABSORBING LIGHT ENERGY from another object.
- Does not give off light right away.
- Keeps giving light when energy source is taken away.
(ex) Glow-in-the-dark items.

- The creation and emission of light through a CHEMICAL REACTION.
- Often has LITTLE TO NO HEAT.
(ex) Glow sticks  

Tuesday, January 06, 2015

                                                           Physics: Optics
Today we finished our questions for the Ted Ed video that we watched yesterday. Some of the animals that use bioluminescence ( light made by living organisms ) are the angler fish, box jelly fish, railroad worm, deep sea shrimp and many more. The advantages of using bioluminescence are
- you live longer ( prey wont want to eat you)
-Scare away your predator
- attract a mate
-attracts some food ( angler fish uses it to get close to another fish to eat)

Monday, January 05, 2015

Entro to Optics

Today we started our new unit on optics. Optics is like light  and ow it is produced and perceived, as well as ow it moves.  One of our topics is what is colour, like if you had to explain it to a blind person what would you say. My explanation was colour is bright or bland, it is on ever thing. You can change the colour of something and fade the colour of a object. that's my explaination but everone's is differant. We did a work sheet show what we all ready now about light. Then we did some notes. 
-the creation and the emission of light by living organisms
-caused by chemical reactions
-chemical is turned into light energy