Science Questions Answers

Posted on

1. What body system did you pick to build as a working model (7th grade)?

The circulatory system.

2. Why have you decided to build this body system as a working model (7th grade)?

I have chosen this system (with Marcus and Thomas) because we thought it would be intersting to make a model, and because it was the simplest, we could research deeper into it. As in, there are less parts to learn about, so we can go deeper in knowledge about the system. The digestive system, for example, has many, many parts. I would have good knowledge on it, but I wouldn’t be able to research as deeply into the system.

3. What materials are you going to need to complete your build  (7th grade)

Some Pipe, to represent the blood vessels.

Water, for blood. Red food colouring for oxygenated blood, Blue food colouring for deoxygenated blood

Pumps, to represent the heart, pumping the blood through the circulatory system.

Cardboard, as a background to put the pipes and pumps on.

End of the Year Reflection

Posted on

Language Arts and History

1. In what ways have you changed as a reader this year? Refer to specific pieces of work to show this.

As a reader I have improved in reading for a longer time period for books from certain subjects, like reading Where the Mountain meets the moon in 1 sitting, reading Starry River of the Sky in 2 sittings(because I had to go to sleep), and reading half of the book HIGGS (about the Higgs Boson), in the time of one day.

2. In what ways have you changed as a writer this year? Refer to specific pieces of work to show this.

I have learned more about different parts of a sentence, sentence structure. I have learned also how to write a good essay, and good paragraphs. For example, my Qin Xi Huan Di essay, my Memoir, and my exaggeration essay.

3.What is the pattern that you noticed in the history topics we have studied this year?

They were all about ancient Civilizations in Afro-Eurasia. Like the Greeks, the Romans, and Egyptians.

4.What are the patterns that you have noticed in how you have approached history this year?

We read the sections at home and then get a study guide at school and have a test.

Math:

1. How have you improved or increased your understanding in math this year?

I have learned “some” new things in math and new strategies to solve problems. I have also learned a little bit to not rush when doing Math.

2. How do you think you are as a mathematical thinker? Do you make connections across different concepts, check the reasonableness of your answer and show your process?

I can solve many math problems easily but it’s showing my work that is hard to show. This is because I am impatient and like to finish things quickly.

3. How do you think you have grown with the following practices:

  • Problem solving and persevering to understand what the problem is asking

I have learned new ways of solving a problem and also a better way to understand a math question.

  • Precision in your work

This is something I am good at but sometimes wasn’t accurate in the beginning of the year.

  • Modeling of your work

Ok, this is plain and simple, my writing isn’t very tidy, so when I model, it’s sort of messy.

Science:

1. How have you increased your Scientific knowledge this year?

I have grown in scientific knowledge slightly, because most of the things we learned this year I knew before.

2. Do you feel that you are making connections across the units that we have done this year? Explain using some examples.

Yes because we had a Mind Map test and I made many connections between each subject.

3. Do you feel that you have increased your scientific skills this year? For example measuring, observing, re-testing, precision and focus in the lab….If so, explain how using an example(s).

Yes I have grown in scientific skills because before our labs were boring and simple but this year they were complicated and really fun, and really like they were for a chemist or any sort of real scientist.

Work Habits: This applies to ALL classes. (Engagement in Class (Productive, Interactions, Contributions), Organization, Working Independently, Reflecting on Work, Meeting Deadlines, Punctual, Social Responsibility(respecting) )

1. What do you feel are your strongest work habits? Give examples of how you have shown this.

I think I am the best at following school rules because I rarely break them and I respect them.

2. What work habits do you feel you are still needing to focus on for the end of this year and for Grade 7? How are you going to progress with these work habits. Give specific examples.

Contribute more to class discussions because I don’t speak a lot and thus don’t contribute a lot. I will improve on this by thinking that what I say wont be wrong.

Overall Grade 6:

1. What has been the achievement that you are most proud of at school this year?

Getting a lot of EE’s in science.

2. What has been the achievement that you are most proud of outside of school this year?

Having my Musical Theory test and passing it.

3. What has been the most challenging element of grade 6 for you? How did you work to overcome this challenge?

Being engaged in Chinese Class because it isn’t very interesting and it doesn’t keep my interest very long..

4. What are you most looking forward to in 7th grade?

More free choice for PEAK.

Winds and Pressure

Posted on

The sea breeze is formed near land when the ocean is colder than the land it’s near. This is when the sun is up so the land can keep it’s warm, although when the sun is out of view the land looses it’s heat quickly, but that’s not related. Back to the point, the land becomes hotter than the ocean, and it decreases the air pressure over the land. That makes the air hotter rising up. While this happens, the air above the ocean is also decreased in pressure, increasing temperature slightly. Since the air from the land goes up, the air goes under the hot air above the land and becomes low pressure, making it go up, making a cycle.

Land breezes occur at night. The land surface cools down more quickly than the water surface. Therefore, the warmer air above the ocean is lighter and is rising. The heavier cool air over the land is flowing towards the water in order to replace the rising warm air. This flow is called land breeze. Like the sea breeze, the land breeze is also influenced by the strength of the winds and the coastline configuration. The land breeze is weaker in speed and less frequent than the sea breeze. The land breeze usually blows for only a few hours and changes direction. It can extend about 10 km seaward. Land breeze occurs in the temperate regions during the cold season, especially when a warm current flows along the coast.

Coriolis Effect Questions

Posted on

1. What is the Coriolis effect?

The Coriolis effect is when something is moved off course from it’s original path because of rotation. In the image above, you see that the wind is represented by the arrows. (This is how the Coriolis effect works on the Earth): As you can see in the Northern hemisphere, the wind moves clockwise, while it moves counter clockwise in the southern hemisphere. This is because the Earth rotates. It rotates counter-clockwise. While the wind in the north moves down straight and in the south moves up straight it’s visual becomes like it’s curved. If you spin a ball, the equator spins faster than say the top and bottom where it’s spinning axis is at. So, when the Earth rotates counter clockwise, or right, it sort of ditches the wind that is directly above it, making it go left(or right), or clockwise. To explain it clearer, the equator is moving faster away from the wind than the 30* latitude is, thus making it curved. Then around 30* to 60*, the wind is moving towards the poles. Again, the 30* angle of the earth is moving away from the wind faster than the 60* earth is moving from the wind, giving another curve. Then 60* to 90* is the same as the equator to 30*.

2. What is subject to the Coriolis effect?

Anything over something rotating, like the winds in the air around the Earth.

3. What is the direction of deflection in the Northern Hemisphere?

Right, or Clockwise

4. What is the direction of deflection in the Southern Hemisphere?

Left, or Counter-Clockwise

5. What happens if pilots do not correct for the Coriolis effect?

They will land off course.

Heat Notes

Posted on

Conduction, Convenction, and thermal Radiation.

Conduction is transfering thermal energy from some matter into another bunch of matter. Convection and thermal radiation is also 2 others ways thermal energy is transfered.Thermal energy always transfers from sonething higher temperature to something lower temperature.

Examples of conduction are heat packs, walking on snow with bare feats, ironing a shirt, and a lot more etc.

 

 

Convection is the transfer of thermal energy by particles moving through a fluid (either a gas or a liquid). Thermal energy is the total kinetic energy moving particles of matter, and transfering thermal, or heat. When something gets heat, it transfers it, thats how water boils.

Examples of convection is boiling water, and the atmosphere.

 

 

Thermal radiation is heat coming out from something hot.

Examples are heaters, bonfires, etc.

 

1.Metals are extremely good metal conductors because their atoms and molecules are extremely closely packed together so heat transfers by vibration quickly.

2. The hot air and air are both gasses, so they already have low densities, and hot substances are more energetic than colder substances, so it’s spread more apart, giving it an even lower density. Because of this low density, these gasses fly up into the air.

3. It is transferred because the fire creates heat that travels through the air to me

4. Conduction is related the states of matter because solids conduct heat energy well because the particles are close together, while liquids conduct less, and gases the least. Solids conduct electricity if they are metal, however, liquids conduct if there are ions , and gases can be ionized, so all of them can conduct heat energy. This means that any material, solid, liquid, and gas can conduct heat, which is why the Earth his warmer than it used to be.

Convection is the movement of molecules in a solution according to the kinetic energy imparted by heat energy. Basically, as the substance heats up, it gets all swirly. Convection occurs in liquids, gases and plasmas. It cannot occur in solids, because solids are solid. That is, the molecules are bound in cohesion and are unable to move around in the substance, only vibrate. If the substance is heated enough to break that cohesion, it becomes a liquid. Meaning, Convection can occur a lot in liquids, quite a bit in gasses and plasmas, but never in solids.

Radiation occurs in all states of matter, because it passes through matter as waves where it reaches any substance where it can heat up and radiate. When an atom has more neutrons than protons then it releases the neutrons in the form of alpha,beta or gamma rays. An atom also radiates gamma rays if it comes to ground state from an excited state.Then the energy difference is given out as gamma radiations. gamma ray is also given out after alpha or beta decay due to excess energy in the decaying nucleus. If n/p ratio is less than 1 then the excess protons are converted into positrons(e+) and given out.

 

Notes on Separating Mixtures

Posted on

Chromatography is good for separating dissolved substance made of diverse colours, like inks and plant dyes. This works because some dissolve in the liquid, which you can then put a piece of paper in and watch the magic.

Filtration is another good way to separate a insoluble solid from a liquid.

Evaporation is another good way to separate solutions. You evaporate one substance at it’s boiling point and the other will stay a solid or liquid, so you have separated it.

Simple distillation also works. You first evaporate one substance, then cool it back down in another container.

Fractional distillation is good for separating 2 or more liquids from each other. It’s distillation but with a few extra steps, like an extra filter of what’s-nots.

Separating Solutions

Posted on

Lab # 2 Questions:

1. The substance that remain stick to each other, and stick to the walls of the cup.

2. It has evaporated

3. I think it’s salt because the teacher told us it was a salt water solutin

4.Taste it 😆 , or get a electron microscope and see if it is made of the same substances as salt.

 

Activity 4:

1.It would be heterogeneous because the cereal doesn’t dissolve into the milk.

2. I would get the solution with a syringe or something of the same build and get the solution from the ground. Then I would go into a lab and distill the solution so only the solution is left and everything else is left.

3. She created a solution, or a homogeneous solution. This is because it dissolved together and is inseparable, so it’s a solution, which is homogeneous. One substance dissolved another substance, which transformed it into a solution from a mixture.

Solubility Questions

Posted on

Review

What is solubility?

Solubility is the amount of solute that can dissolve in a certain solvent at a certain temperature.
For a given solute and solvent, what factors affect solubility?
Temperature affects them, pressure affects gasses, and volume also matters.
You open a can of room temperature soda and pour it into a glass. Why does the soda go flat? Will it go flat faster or slower if you add ice? Why?
If you add ice it will go flat faster because the carbon dioxide can dissolve faster ad more of it can dissolve if it’s colder than if it was warmer.

States of Matter Focus questions

Posted on

1. 500 grams of sand can be poured from one container to another container. The sand will take the shape of the container into which it is poured. Your friend says that the sand must be a liquid because it can be poured. How do you convince your friend that sand is a solid?

Just because sand is a solid doesn’t necessarily mean it’s one single solid object. Sand is actually a lot of sand particles, everyone sees as tiny spheres, in one area at a time. Sand couldn’t be a colloid that is part solid and liquid because you cant actually break apart the sand particles. You just separate the mixture of sand into 2 different mixtures.

2. According to the definition for matter, all matter has mass and volume. How would you prove that a gas, such as air, has mass and volume?

To prove volume, it’s actually quite simple, because gas takes up a lot of room. But to prove it, I could get dry ice and just have the dry ice melt(boil?) into gas. We can see the white dry ice gas particles, so we know it has volume. For mass, it’s a little bit harder. Actually, it’s quite simple think about it. To get density, we need mass and volume. Get a cup of water, and notice. Gas has a lower density than any liquid, so the gas won’t just flow into the cup and make the water spill out. But for gas to have a density, it needs to have a mass and a volume.

Bouyancy

Posted on

An upward force that kelps push something above a liquids surface. All liquids contain this buoyant force. Weight is one of the big factors that determines if something can float or not. If something is heavier, more downward buoyant force will push it down, but if it was lighter, less buoyant force you push it down.

 

Review

1.What is buoyant force?

It is a force that all liquids contain. It helps determine if something will float above water or not, and how much of it will float above water.

2.Why does buoyant force occur?

The buoyant force is found naturally in all liquids, so it has to occur. It is needed to apply the physics needed to determine why something floats.
3.Why is a heavier object more likely than a lighter object to sink instead of float in water?

Assuming the heavier object has the same volume as the lighter object, it is because of density. If the mass is higher than the volume, it will sink. The 2 have the same volume, but the heavier object has a larger mass(duh), so it will sink.

4.Assume you have an ice cube and also a small rock that is the same size and shape as the ice cube. Predict what would happen if you placed the ice cube and rock in a glass of water. Explain your prediction.

Well, firstly, the ice cube will have slightly a smaller density than water because it’s made of the same molecules at water, just that it takes up less volume, and a bit more mass. The rock would most definitely sink, because it’s mass is too large for it to float, more downward buoyant force is pushing it down. But wait, it’s room temperature, because we have a glass of water. That means the ice cube will melt into the water, overflowing the glass cup(possibly), but the rock will still be sunk.