Friday, April 16, 2010

Three experiments showing how your pinhole camera works

Experiment 1
(a) It is up side down
(b) Very light color, as far as I can tell
(c) Not the same size

Experiment 2
(a) The close the pinhole camera the larger the image, and the farther the smaller the image
(b) The farther the pinhole camera the more clear the image is

Experiment 3
When there are two pinholes, there are two images

Experiment 4
(a) Brighter
(b) Fuzzier
(c) Bigger

Experiment 5
We put the lenses on the outside of the box, but in general the lenses were to help make the image more clear, because they can focus the light and make it clearer.

Experiment 6
1. The window will show because the light of the sun make it stand out in a dark room
2. We sat someone in front of the window, but we could only make out their silhouette
3. Lenses helped focus the light, the closer the lens, the more focused the images, but the smaller, while the farther the lens the bigger the images, but the fuzzier

Questions
1. The inside of the camera needed to be black to absorb the light
2. We did not use a light shield, but the light shield would be for keeping unwanted light out, and from keeping the light inside from leaving (as far as I understand).
3. The lens can focus the light so that it is in a beam, and not all over the place, giving a clearer image.

Wednesday, April 14, 2010

What Have You Learned About Your Taste, Smell and How Your Skin Feels

This unit we have been talking about the senses and how they work, mainly taste, smell and touch or feel.

Taste: Your tongue is the muscle you use to taste foods. The tongue can taste anything anywhere, and the myth about you being able to taste certain flavors on certain parts of your tongue was fake, and there is not tongue map. Foods have chemicals in them that are absorbed by your taste buds, which are little "bumps" all over your tongue that absorb the taste chemicals, and send a message to your brain, telling you what the flavor is, either sweet, sour, bitter, salty or (according to the brainpop video) umami.

Smell: Your nose is what is used to smell, and when you smell something, what happens is particles of the thing are going up into your nose, where you have hairs called cilia, that have chemical receptors. When a molecule hits a hair, it sends a message or signal to something called your olfactory bulb, which is an extension of the brain that detects different odors

Feel:The last one is feel or touch. Our skin can detect pressure, temperature and pain. To feel these things, we have nerves under our skin that can sense the different things. These nerves are called dermis and they send the different sensations to your spinal cord, which forwards it on to your brain. The more nerve endings there are in a certain body part, the more sensitive it is. Mechanoreceptors are what let you feel pressure (including pain) and vibration, as well as thermoreceptors, which allow you to feel temperature.

How Can You Imrpove Your MYP Grade Next Term

Even though I got a 7 MYP Grade this term, there is still room to improve other aspects of my learning, and my total was a 34 so that means I could still improve. I think for next term, I would like to organize my work a bit better, because I ended up doing a lot of the work last minute, and so it didn't always come out to the best of my ability. Also, I would like to focus on actually bringing the stuff with me to school, because it occurred a few times where I had done the work, but forgot to bring it, and handing it in late would give a bad mark. Also, I would like to try to improve my focus in class, and remember to always write down agendas.

Tuesday, April 6, 2010

The Tongue Experiment

I sort of agree with Dr. Edward, but sort of disagree. First of all I found that the parts were not as definite as they were drawn. Second of all, I found that you could taste anything anywhere faintly, but the places the tastes were most flavorful were the parts mapped out. So I sort of agree and disagree at the same time.

Tuesday, March 9, 2010

Thursday, February 25, 2010

Micro Life Agendas

2nd February

- Show petri plates bread mold

- Discuss lab write-ups

- Show where students can get info to review from

- Discuss differences between bacteria and viruses and how they cause diseases

8th February

- Test February 17th

- Discuss grades

- One world – need to finish by Wednesday. Will write up on Wednesday

22nd February

- What is a mineral?

- How is it different than a rock?

- What are crystals?

- How are crystals made?

- How are minerals different from each other?

- How are minerals used? What is an ore?

23rd February

- Pass back and go over Micro Life Test

- Go over assignments on the wiki page

- Explain our activity

24th February

- Topic Today: Structure of the Earth – What do you already know?

- Key Concepts to learn today – What minerals are and how they relate to the structure of the earth.

- Do group activity to learn about minerals and update blogs and get assignments up to date.

What is a Mineral?

What is a mineral?
A mineral is a naturally occurring solid (meaning that it it happens naturally, does not need human influence) that is made up under different geological chemical pressures. It has specific physical and atomic structures, contrary to rocks.
How is a mineral different than a rock?
A rock is made up of 2 or more minerals, meaning it is a mixture of combination.
How are crystals made?
Crystals are made when water that is rich in minerals gets into the cavities or holes in rocks to form crystals over time. Crystals can take hundreds of years to form which is one of the reasons why crystals are so valuable
How are minerals different from each other?
Different minerals have their atoms or molecules arranged in a different order, giving them their different properties.
How are minerals used?
Minerals are used for different things. The human body needs a certain amount of minerals, and so minerals can be used to keep you healthy, but that is in small quantities. Everything we use in our daily life is somehow connected to minerals, from our faucets that have iron in them, to our light switches that have copper and aluminium, they are there daily for our needs.
What is an ore?
Ore is a rock that contains useful minerals that are extracted in the process of mining.