Archive of ‘Grade 10’ category

27
May
2024

Astronomy Wonder Assignment

categories: Science 10

Question: How do black holes form and what happens inside them?

Firstly, what are black holes?

A black hole is a space area where gravity is really powerful that even light can’t break free from it. This strong gravity is due to matter being squeezed into a very small area. This compression usually happens when a star reaches the end of its life. Certain black holes form as a result of dying stars collapsing in on themselves.

How do black holes form?

The smallest black holes are called Primordial black holes. They are believed to have formed right after the big bang in the early universe. Medium sized black holes are called Stellar black holes. Stellar black holes are different. They happen when a big star collapses in on itself, causing a supernova explosion. They are the most common kind of black holes and a lot of them are found within the Milky Way.

Supermassive black holes are the largest black holes. They are thought to have formed at the same time as the galaxies they’re in. The size of the supermassive black hole is connected to the size and mass of its galaxy.

Sagittarius A is a supermassive hole at the centre of the Milky Way. It has a mass equivalent to 4 million suns and it is estimated to be around 44 million kilometers wide. It was first identified in 1974 by astronomers Bruce Balick and Robert L Brown but it was not officially named until 1982.

https://images.app.goo.gl/k4cteyqFLQUntRr78

When a star collapses on itself, like an implosion, this collapse creates a black hole. It doesn’t take up any physical space but has a lot of mass, which is the star’s leftover material.

As the black hole consumes things around it, it becomes more massive. The more it consumes, the bigger it gets. As it grows, it creates a region around itself where nothing, not even light, can escape. This boundary is called the event horizon, where things can’t return. Once something has crossed this line, it’s lost to the black hole forever.

When a large amount of matter is packed together, gravity becomes the dominant force, pulling everything inward. This gravitational pull is so strong, leading the matter to collapse in on itself. The collapse doesn’t stop until it reaches a point called a singularity.

https://images.app.goo.gl/VWJTrgza3fi4kupu8

This video talks about black holes and how they work:

So, what happens inside a black hole?

If an object gets really close to a black hole’s event horizon, the object would go through a process called “spaghettification”. What this means is that the gravitational pull from the black hole would stretch the object in the direction of the black hole, in a spaghetti appearance. So, once inside the black hole, the matter gets torn apart into very small parts and then it will eventually be squeezed into the singularity. When the singularity gathers more matter, the black hole’s event horizon expands.

This is what spaghettification looks like:

https://www.cbsnews.com/news/black-hole-star-spaghettification-tidal-disruption-event/

Being really close to a black hole’s event horizon can also mean that they are cut off from the rest of space-time. Time will go by much slower when next to a black hole. 

As objects get near the gravitational pull from a black hole, time also becomes stretched, resulting in time dilation where time flows at a different pace. So, if you were near a black hole for one year, it could mean that 80 years has passed by on Earth.

 

Reflection:

What questions did you need to research in order to research your topic?

  • I had to research about what black holes were. That way I could explain what it was first. Then I would be able to get into answering my question.

What new or familiar digital tools did you try to use as you worked through this project?

  • I used reliable sources like NASA and other websites as I worked through this project. NASA is a website I am already familiar with, so it was the first website I used to help me with this project. 

What was the process you used to investigate the topic?

  • The process I used was to first pick my question. I found a meaningful question I wanted to research about, then I got started. I came up with similar questions in order for me to have found lots of information. Then, I made sure I kept track of all the websites I was using, so I could easily go back for more information if needed. Then, I put all my information together and added pictures.

How did you verify and cite the information you found?

  • I made sure that there were enough detail for me to understand and summarize the information. I also tried to find scientific websites to make my information more accurate.

How did the process of completing this challenge go? What could you have done better?

  • I think that the process of completing this challenge went really well. I was able to find all the answers to my question and I was able to learn a lot about my topic. What I could have done better was get more of the work done in class. Since I did not get most of the work done in class, I had to finish it at home. 

 

Bibliography:

16
Apr
2024

Final Self Assessment Goal Review and Reflection

categories: Science 10

Goal Setting:

Pillar 4: 

My current strengths are that I always come to class prepared and I want to do really well in this course. I ask questions when I do not understand something in order for me to succeed. My future growth is that I want to try my best not to get too distracted during class. Sometimes I struggle to stay focused. For example, when we are working on an assignment and I get a notification from my phone, I end up scrolling for a little while. So, in the future I would like to stay more focused. My goal is to stay away from my distractions when I am working on an assignment, that way I can get my work done quicker.

Review of my Midterm Goal:

I think that I did reach my goal. For example, when we were working on the Rube Goldberg project, I did not go on my phone because I wanted to get my project done as soon as possible. I would say that I improved and made progress towards my goal by making sure to not check my phone when I would get a notification. I don’t think there was any other way I could have done things differently because I already reached my goal. I also did everything I could to make sure I did not get distracted. I made sure to stay motivated when finishing my project before going on my phone. So, I would not have changed anything because I proved to myself that I can stay focused and not let my phone distract my work time. 

03
Mar
2024

Local Legends Project – How Turtle Saved the Animals

categories: English 10

This story is about a Turtle who wished to free all the animal people. Eagle raced all the animal people and he would always win. If he won, the animal people would become his slave. Turtle and Muskrat never raced Eagle, so they were not his slaves. But one night, when Turtle had a dream that he must race Eagle and set the animal people free, he was very determined. So, the next day he went and told Eagle that he wanted to race with him. Eagle explained the rules that Turtle would get to pick from where they would race and that if Turtle lost, then he would become his slave as well. The next day, it was time for Eagle and Turtle to race, so Turtle told Eagle to pick him up and that they would race from the sky. Whoever reaches the ground first would be the winner. Then when Turtle told Eagle to “let go” the race began. Turtle was falling really fast like a rock. Eagle was worried that he would lose. Eventually Turtle won the race and freed all the animal people. Turtle told Eagle that he learned from his dream that he would win. He believed in himself and set the animal people free. 

Oral storytelling is important in all cultures because it keeps traditions and history, passing down knowledge from one generation to another. It promotes a sense of community and identity, bringing people together through shared narratives. In addition, oral storytelling allows creativity and imagination, allowing each storyteller to put their unique voice on the stories they share.

How Turtle Saved the Animals

This project is about exploring stories and learning how to tell them. I had to re read the story we chose multiple times. Then I would eventually memorize it so I could tell it. Then I created a digital presentation and recorded it. 

05
Feb
2024

Circle Reflection

categories: English 10

What is good listening?

Good listening is when someone is talking, and you are paying your full attention to them. For example, during the circle when someone had the talking stick, I made sure that I was listening to what they were saying. Showing good body language is key to being a good listener. During the circle discussion, I carefully heard everyone’s story and learned more about them. Their own experiences, feelings, and personalities. It was a nice moment to get to know more about people’s interests. So, I think being a good listener is when you are giving all your attention to the person that is talking and showing them that you care. 

 

15
Jan
2024

Week 17 – Math 10

categories: Math 10

This week I reviewed systems of linear equations to study for the test.

I learned helpful steps to solve word problems.

For example:

READ – carefully – 3 times.

  1. Declare variables
  2. Write system ( 2 equations)
  3. Solve (substitution/elimination)
  4. Answer in sentence (does answer make sense?)

or Equal sign –> Verb: is, was, will be

run, walk, drive, climb

Then, I was solving more equations so that I could get better before test day.

08
Jan
2024

Week 16 – Math 10

categories: Math 10

This week I learned how to solve systems of linear equations.

For example, this is the equation: x + y = 9, x – y = 1

First, you have to rearrange the equation to isolate y.

Then the equation looks like y = 9 – x,   x – y = 1. After that we have to combine the two equations to get y. We insert “9 – x” into y. It becomes x – ( 9-x ) = 1. Then we combine like terms by bringing 9 to the other side of the equal sign. It will become “x + x = 9 + 1”.  Then we do ” x + x = 2x” and “9 + 1 = 10”. Then we simply the equation: 2x/2 = 10/2. The final answer is “x=5”.

But, we still have to solve for y. So we take “x=5″ and insert it into the original equation where x goes. ( x – y = 1) .

It will look like this: 5 – y = 1. Then we isolate y, so we bring y to the other side and 1 to the side that “y” was on. That would look like this: 5 – 1 = y. Then we subtract 1 to 5. The final answer to the equation is “x=5” and “y=4”.

Another equation is: 4x + y = 0,   7x + 4y = 3.

First we take “4x + y = 0” and isolate y. It will look like this: y = -4x.

Then we insert “y = -4x” into “7x + 4y = 3“. It will look like: 7x + 4 (-4x) = 3. Then we start with the brackets and distribute 4 into -4x. Then the equation will look like this: 7x – 16x = 3. 

After that, we have to combine like term. So, we do “7x – 16x“. That will be “-9x”. Then we solve “-9x/-9 = 3/-9”. The final answer will be: x= -1/3.

Now we have to solve for y. So, we insert “x= -1/3” into the original equation. (4x + y = 0)

It will be 4(-1/3) + y = 0. Then we distribute 4 into -1/3. That will be “-4/3 + y = 0“. For the final step, we have to isolate y. The final equation is: “x = -1/3” and “y = 4/3”.

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