Archive of ‘Grade 9’ category

Asexual Reproduction Lesson 1

1. Find real examples of your form of asexual reproduction
• A bud swells on a plant stem
• Plants gets planted, start to grow, fully mature

2. Describe the process
Buds expand due to tissue growth, eventually develops into mature leaves and or floral structures.

3. Define asexual reproduction in less than 10 words
-One organism that reproduces when an offspring occurs.

How Things Work: Nuclear Power Plant Model

Going into this project I was very excited because I love building and putting together posters and models. I find making a physical copy of something makes it easier and more fun to learn about.

Nuclear 3D Model Questions

1. The first main part is the reactor core. It consists of fuel elements, control rod, coolant, moderator and pressure vessels. The second main part is the reflector. This is placed around the core to reflect some of the neutrons that leak from the cores surface. The third main part is the control rods. This absorbs the neutrons so it can maintain or stop a reaction. Helps shut down the reactor in emergency situations. Free neutrons hit a uranium atom and split it. Nuclear energy starts from splitting of the uranium atom. This is called fission; it generates heat to produce steam which is used by a turbine. Because they do not burn fuel they do not produce greenhouse gas emissions. Which is better for the environment.

2. Dangers: Although nuclear power plants are one of the less harmful energy sources it is still very harmful. When you enrich uranium it harms the environment. If a serious accident occurred large amounts of dangerous radiation which can cause an increased risk of cancer to people that are exposed. It does not emit air pollution, isolates its waste from the environment and does not require a huge amount of land.

3. Ethical Implications: Nuclear power plants are defiantly a more efficient way of producing electricity however it can be very harmful to the environment. If the uranium fuel were to leak it can cause many health issues such as loss of breath, illness and if touched by heat could blow up.

4. Environmental Implications: Nuclear power plants are one of the cleanest forms of energy as it does not emit air pollution. However, uranium is radioactive so if it were to some how leak out it could kill of people and animals in our world.

From the beginning of this project I felt very comfortable and confident about the collaboration as we got to choose our partners. This made it easier because we already knew how our partners worked and we didn’t need to take time to see how each other work we could get started right away. If we were to do this all over again I think we should’ve researched first and then started throwing out ideas of how to build the model. This way we knew every detail of the machine. Building the project everything went smoothly we each did an equal amount of work so I think splitting up the tasks evenly we did a good job. Overall I think our model turned out great but if we got more time it would of allowed us to make it bigger and better by maybe adding more details and explaining each part and how it works in the process of making electricity.

Digital Footprint

A digital footprint is a trail of everything you have done on the internet, good and bad. Having a digital footprint can be beneficial but can also be a disadvantage. The downside of having one is if you commented on a photo and you said something mean people can still trace it back. Even if you were young and you weren’t thinking you can’t delete it. You can delete it from being seen on that post but it is still out there for the public to see. When you are interviewing for a job the employers will search you up and they can see all of things you have said on the internet. If they saw something they don’t like and they don’t want their company to represented by you could be eliminated from a possible job.
Keeping a clean digital footprint is necessary to have a bright future. One way you can create a respectable trail is by not commenting on photos that you don’t need to. You might have an inside joke with that friend ad they won’t care about what you say but others may find it offensive. Another way is to think about what you are googling because what you type into you search engine is also recorded. If you wouldn’t want others to know what you are searching it probably isn’t the greatest. The last way is to think before you post. Say to yourself “Would I want a close family member (parents, grandparents etc.) to see this?” If the answer is no don’t hit post.
By letting others know how your digital footprint can affect your future I think it would make people think twice when they are about to post or comment on something.

Science App Review

Dream: I would like to find an app that lets me to science experiments at home without me having to get the actual supplies I need. But I also want to learn about the materials I amusing so hopefully there will be some facts.

The app I chose to use is Kids Science Games by Ehtasham Haq. I found this game very user friendly as it is not to busy or hard to figure out. The games were fun and easy to follow along with. However, the app was a bit glitchy and touchy at times so I think some people would get frustrated by that. While I was doing the experiments educational facts would pop up which told me why I was using something and what it does.
I thought this was great because it is a game parents can give this to their kids to play and they would be learning at the same time. But for grade 9 students I think it’s a bit to colourful and cartoonish. The experiments could have had more steps for an older age group. What I think would make the app better is by adding age groups so they can have for simple games for younger kids and more complicated experiments for older users.
This app would also be great for people that don’t have all the supplies at home that they need to complete labs. The app covers a range of subjects like chemistry, physics and electricity.
Overall I thought the app was interesting and well designed but not for an older age group.

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