Getting ready for our upcoming astrology unit

In a few weeks we will be moving into an Astrology unit...which got me thinking.
I read some time ago that farmers of crops such as broccoli and cauliflower plant these on a full moon to maximise their exposure to light, therefore growing better crops faster. As plants gain energy from the sun, how would moonlight benefit?

Thanks to Colin in the UK, check out this link which justifies this theory:
Guide to planting by the moon

Science was extraordinary. We changed a solid, into a liquid then we changed the liquid in to gas. It all relied on temperature. The cold temperature strenghtens the bonds that makes a solid, and the hotter the temperature, the looser the bonds. It was amazing to see the temperature go pass 100 degrees. The water was starting to evaporate! Also, there was so much going on that we made almost 2 pages of observations!

Ice to Water to Steam prac

Yesterday we completed the Ice to Water to Steam prac in the lab. Some great observations were made and excellent discussion was generated as a result.

The pic left shows the ice in the water at the beginning of the prac. Below left you can see the water when it has reached boiling point.

Prac: Solid - Liquid - water

Today during science we did an experiment using: a beaker, gauze mat, tripod, thermoter, bunsen burner and a retort stand. What we did was put some blocks of ice and 100ml of water into the beaker we then, put the termometre into the beaker (making sure it's not touching the bottom or sides that what the retort stands for), then, taking tempretures for 3 minutes using a stopwatch (without bunsen burner on), then we turned the bunsen burner on and put under the beaker and recorded the temperaters every minute until it reached boiling and recorded observations we finally, recorded observatios and tempretures 3 minutes after the temperature reached boiling point. There your done.

In science, I learned a very important thing "what is condenstation" now thanks to studying i know. Condenstation is the opposite of evaporation. It takes place when water vapor in the air condenses from a gas,back into a liquid form

In class at our last science lesson, we were told to do some homework, one of the questions were"Where do ice cubes get their energy from when they are in an esky full of soft drinks?" I need help can someone help me please

Parallel Line Angles

Today we worked on Parallel Line Angles and the rules to the left.

We also learnt that Complementary Angles are 90 degrees and Supplementary Angles are 180 degrees.

Sublimation

What was interesting that i learnt was that a solid absorbs heat and directly changes to a gas without melting, this is called sublimation.

Science Questions

Humans are naturally curious beings, so I have a lot of questions to pose.
Why does your voice change when you inhale helium?
How can you get killed if you inhale too much?
I also don't really understand the Brownian Motion, could someone explain it in depth, please?
And, although this is unrelated, how does the nerves understand what you want to do? Wouldn't you have to think about what you are going to do before you do it? Or is it like a super fast game of ping pong, where with every tiny movement, your brain sends super fast messages to the nerves and they have to respond/obey?
Also, if it is like ping pong, how does your brain communicate with your nerves when you are asleep? Isn't your brain supposed to switch off when you go to sleep? Or when you roll over subconsciously, are you not fully asleep?

Parallel Lines

Do Parallel Lines ever meet. Someone told me that they meet in infinity, is this true?

Silly Putty

Is silly putty/slime a solid or a liquid?

Borax

when we were in the lab on the 20th, we were making silly putty, we used a substance called borax and i was wondering what it was made of? and why does it make the silly putty combine into a solid?

Silly Putty in Science

During science yesterday we made silly putty when we made silly putty we added: PVA glue, water, food dye and borax. The question that was asked was ''is the silly putty a solid or a liquid?'' the answer was both. Then this morning when I woke up i found that my silly putty had more liquid coming out of it. I hope it doen't harden!!!!!!

Parallel Lines

Can there be more than 2 angles in a parallel line?

Parallel lines

today in class we learnt about parallel lines. Did you know that parallel lines are a pair of lines that never cross and are exactly the same width across. Skyscrapers are a good example of this as the walls are straight up and exactly the same width across. the roof on top of a skyscraper would be called the transversal. The transversal is a line that crosses both parallel lines and intersects them.

Congruent

Today in our maths lesson we learned about congruent angles. Congruent angles are two angles that are the same. In the image on the right, the congruent angles are the two angles that are diagonal from each other.

Transversal

Something that i learned in our maths lesson today was that a pair of parallel lines crossed by another line called a Transversal. The line through the middle is the Transversal. I also learned that the transversal has to be straight, it can't be curved.

Diagonals in a Polygon

This is how to find the number of Diagonals in a polygon:

Say you have a triangle, and you are wanting to know how many diagonals there are. The rule, on the left, demonstrates how to find the number of diagonals. There are no diagonals in a triangle. You must minus (3) from the number of sides, then multiply the sides by your answer. Divide it by 2 and you will get your answer.

Polygons

Today we discussed Polygons and the angle sum of Polygons. Check out Brainpop for a great little clip to kick the lesson off. http://www.brainpop.com/

An to find out the angle sum of a polygon:

Silly Putty prac

Today we created Silly Putty. Is it a solid or liquid? When mixing the ingredients together, why add more borax to thicken the product rather than PVA glue?

Changes of state

Today we discussed Changes of State, specifically, solid to liquid, liquid to solid, liquid to gas, gas to liquid, and solid to gas.
Concepts boiling point and melting point were also discussed. We will follow this lesson up with a lab prac on Ice to Water to Steam.

Hits this week!!

Many thanks to those who have visited our blog this week and a big thank you to those who have contributed and left comments! The students really appreciate the knowledge you are sharing.

Our visitors have come from all over Australia, New Zealand, Japan, Korea, Malaysia, Philipines, Hong Kong, China, Latvia, Kazakhstan, Argentina, Brazil, United States, Mexico, United Kingdom, Spain, India - I hope I've got them all!!

Thanks again!!

Fluids

Something I learnt Today:
Anything that flows, ie. gases and liquids are in fact classified as a fluid.

Thank-you, TB

Round Puddles

Today SL brought up a question saying '' why are puddles always round? ''

Responding to BB

Plasma can be found in the Northern Lights, Lightning and in classroom lights. Plasma is not common, but can be found in some places.

States Of Matter

Why do we have states of matter?

Which state of matter is the most useful?

Examples please!

I know what plasma is but could someone please find an example of one for me?

measuring angles

how do you measure angles without a protractor?

Does 1kg of water weigh 1.01kg?

Question from TB today:

I was looking for some facts about water, and I stumbled across this site.

They were quite interesting, but look at fact number 18. It says

that a litre of water weighs 1.01 kilograms. Is that True?
http://www.lenntech.com/water-trivia-facts.htm

When is glass glass?

Great chat in class today. Question raised by DS. When is glass glass? In it's solid form we know it as glass. Is it still called glass in it's liquid form when it is being blown?

FLAME

Hello blogger people in our science lesson today we were suppose to find 5 gasses,liquids and solids. So I put Flame as a gas because i thought it was a gas but the teacher told me that flame is not a gas so i was just wondering what it is... Can anybody out there in the world explain to me what it is???

Solid and liquid

As we all shared our homework during science today, GR explained that a pod was a solid and a liquid as the hardened chocolate on the outer layer was the solid and the gooey caramel on the inside was the liquid. It was so funny as all the students were arguing against SL. But do you think that a pod is a solid and liquid or not?

Viscosity does not happen when using water as the water will not stick because of it's different particles to red wine and honey. But why is this?

Viscosity: Red Wine

When viscosity happens using red wine, the red wine will move down the wine glass slowly to form what they call legs. I tried this experiment when my mum had red wine.

Viscosity: Honey

This is an exmaple of viscosity when using honey as you can see the honey drips down very, very slowly and it's all gooey.

Viscosity

As BBI said about viscosity and how red wine sticks to the wine glass and slowly comes down but SL also said during class today that if you were to put honey in a wine glass you would have to swirl the honey around in a different form, also that when the honey sticks to the sides of the wine glass in will come down very, very slowly.

Question Unrelated

Sorry if this question has nothing to do with what we are learning, but if you put some of the chromosones from one fruit seed in another, would the seed grow into fruit tree bearing hybrid fruit that is a mix between the 2?

Examples Of A Solid, Liquid And Gas

A good example of a solid, liquid and gas is hot coffee in a cup. The steam coming out of the coffee is a gas, the coffee is a liquid and the cup is a solid!




Another great example of a solid, liquid and gas is coke with ice. Coke is carbonated, which means it has gas in it, the actual coke is a liquid, and the ice/cup is a solid!

3 Stages

Here is a picture I edited that shows and explains the different stages; Solid, Liquid and Gas. It also shows terms to use when one stage becomes another.

How to make 'OOZE'! It acts as a solid and a liquid!! I Have made it at home it works!

Click on the link Below!
http://www.exploratorium.edu/science_explorer/ooze.html

FEEL FREE TO POST A COMMENT!!

Capillary action

Here is a picture of capillary action at work.

Viscosity

The bottom glass is an example of a substance with a high viscosity. The top glass with the low viscosity.

capillary action

Capillary action is the tendency of a liquid to rise in narrow tubes or to be drawn into small openings such as those between grains of a rock. Capillary action, also known as capillarity, is a result of the intermolecular attraction within the liquid and solid materials. A familiar example of capillary action is the tendency of a dry paper towel to absorb a liquid by drawing it into the narrow openings between the fibers.Read more:

Hallelujah!

YIPEE! I have finally found out what a plasma is.

Plasma is a gas atom or group of gas atoms that have a neutral electronic charge, for they have an equal amount of electrons (negatively charged) to their protons (positively charged). Although I have established an understanding of what a Plasma is, my explaination may not be 100% correct. So if you have a more accurate explaination or understanding, or even an example of a Plasm, please put it in a comment to this.

Thanks, BB.

The motion of tiny non-living objects moving around being agetated by a drop of water is known as the 'Brownian Motion'

Viscosity

Today in science we have been talking about Viscosity. One example that SL used was red wine. He was saying that when swerling the wine it would slowly move down the side of the glass. This is because the red wine is thicker than normal liquids, honey is another thick liquid. This is called Viscosity. In class SL showed us some water in a wine glass. Using water wasnt as effective as honey or red wine, because the water isn't a very thick it wouldn't slide down the side of the glass, because the water isn't thick enough.

Solids, Liquids and Gases!

Heres a picture about the monicules in solids, liquids and gases. From left; solid, liquid, gas.

Science

During science we have been learning about liquids, solids and gases we learnt that you can compress liquids and gases but not solids. Also, that you can change the shape of gases if they are sealed in. But liquids cannot change shape as they flow. But why is it that you can the shape of some solids but not others, for example: you can change the shape of bark but you cannot change the shape of plates. or a plank of wood. Does anyone know why this is?
Does it have something to do with the molecules?

How to draw 5cm EQUILATERAL triangle with ... (Pencil, Compass and a ruler

1. rule a straight 5cm line. (a and b)

2. make the angle of a compass into 5cm with a ruler.

3. place the pointy bit on (a) and draw a circle.

4. place the pointy bit on (b) and draw a circle.

5. put a dot on the meeting point. (c)

6. add the dots with a line

7. ~~ta~~ ~~da~~ here is equilateral!!!!

I was searching for more pictures of triangles and I came upon this picture. I thought it was pretty cool so i posted it. It shows what the angles are in a star. See if you can figure out how many triangles are in it.

Maths Triangle Angles

Today in Maths we learnt about triangles. More specifically, we learnt about the third angle of a triangle and about the reverse angles of a triangle. What I mean by this is...

Third Angle:

1st interior angle + 2nd interior angle = x

180 - x = 3rd interior angle

Reverse Angle:

1st interior angle + 2nd interior angle = 1st exterior angle

Does anyone know any other formulas involving the angles or sides of a triangle?

Interior and Exterior Angles of a Triangle

Heres a picture that I found on the Internet about Interior and Exterior angles of a Triangle.

Responding to TH

That is really informing and amazing!!

Plasma

You know the plasma guns in the movies? It is supposedly used to burn people. In real life, plasma is really hot. Some relationship there?

Water Particles in Science

This is a one water particle. During science yesterday I found that it is made up of two parts hydrogen and one part oxygen. When water is at room temperate the particles are moving slowly and have only a small space between them. When the water is chilled to make ice, the particles cram together and hardly move. Finally, when the water is heated, to create steam, the particles separate and move around 'frantically' (TW). I also learnt that when steam has risen from a container, any salt or sugars will be left, as only pure water vapour can rise as steam.

Does anyone else know some more facts about Water Particles?

Solids

If you can compress some solids; why can't you compress others?

Atoms

I found a picture on the net of an atom. Apparently, this is what it looks like when you zoom in.

Triangles

Are there more than six types of triangles?

Maths Games

Check out this site for some Maths games
Educational Maths Games

Plasma

This is what plasma supposidly looks like. I found this image on the net.

How do you make flint lose water?

Flint is a type of silicon and is said to lose water under certain circumstances leaving a thin layer of white silica (naturally occuring silicon dioxide). What do you have to do to make this happen?

Solids, Liquids, and Gases

Science today was awesome! I learnt heaps. I learnt all about models and how the states of matter are solids, liquids, and gases. Also, I learnt all about physical and chemical changes and how temperature can change the state of the substance. Overall it was a knowledgeable lesson.

States of Matter

We started our Science unit this term talking about the different states of matter. An excellent discussion was had about various things such as, "What is plasma ?(BB)" and "What happens when you cool a solid or heat plasma? (JG)".
Students have been encouraged to post some of their questions from today's lesson and share their findings.

Air Escaping from a Balloon prac.

Today in science we were discussing the reactions of a balloon, and what would occur if a hole was poked in the balloon with a pen and what would occur if the back of the balloon was cut off. As a result of testing this prac we have found out that stabbing a hole in a balloon with a pen would pop the balloon and a loud noise would be made, whereas cutting the back off the balloon would not end up in the balloon tearing and creating a loud noise, it ended up in just releasing the air fairly slowly.

jp7numeracy: Geogebra

jp7numeracy: Geogebra: "Just came across a program on the web called Geogebra. It's a free download and an interactive site. Ideally suited for geometry, linear equ..."

Geogebra

Just came across a program on the web called Geogebra. It's a free download and an interactive site. Ideally suited for geometry, linear equations, integers.
Let us know if you have used it and what you think.
http://www.geogebra.org

Maths Plan for Term 3

Geometry, transformations and location starts off the term. Have some good sites to use for transformations and locations. Any suggested links are welcome. Some good stuff on Maths 300 if you have access to it.
We then get into integers, variables, co-ordinates, and what would be a good Maths unit without linear equations!
Stay tuned for class updates and activities.

Term 3 Science Plan

We're kicking off Term 3 Science looking at matter, particles, mixtures and separation.
After 5 weeks we then move into some astronomy - the Earth's movement in space, the sun, the moon and the planets.
Some really cool pracs coming up. Looking forward to an exciting unit!