[Science] - "Define & Calculate: Density and Pressure"

Throughout the past few weeks in our Science class with Mr Tyagi, we've been learning all about motion. As known, Newton's laws of motion were discovered to be true or accurate, and was carried out through generation to generation, and now we've learnt the ways of motion. In the past lessons, we've learnt about acceleration, mass, force and weight. Today's lesson, we've covered density and pressure, and here a few questions I've answered down below. Thank you very much for visiting my blog, I appreciate it a lot!

[Define & Calculate] Density and Pressure:

1) Describe density and pressure with units :

The definition of density is the state in which something has a degree of compactness of an object or some sort of substance. Density can be calculated with Mass (m) and Volume (v), as in… (density number g/cm3) Pressure how ever is like a physical force in which is removed on or against an object, in which you may have contact with. Pressure is related to force, and the unit for pressure is Pa, and to calculate it, you must divide force by area, its meter-kilogram-second (MKS.) Also, the less dense an object is, lower the pressure, and the more dense the object is, the higher the pressure is included.

2) Describe how friction can be both helpful and unhelpful:

Friction can be both helpful because cars or vehicles that we have now wouldn’t be able to move along the ground or road, and the brakes of the car wouldn’t allow you to stop the car. Friction can be unhelpful when we are trying to push something very heavy along somewhere we need it to.

3) State Newton’s Laws of Force and Motion:

Law 1: Objects at rest sustains (it is stationary), and objects in motion sustains in motion

Law 2: Acceleration of an object is dependent upon two variables.

Law 3: Every action is equal to an opposite reaction.

4) Explain why objects do not fall at the same rate:

Objects don’t fall at the same rate because they have a difference within them, such as a difference in mass, force and acceleration which makes it much heavier or lighter, and the acceleration will increase in which is dependent upon its weight, and the resistance of air when the object is falling would be decreased, which is also dependent on Earth’s gravitational pull. Earth has a pull gravitational force of 9.8 m/s2, and the objects will depend on the gravitational pull of Earth upon its own force. Therefore, objects do not fall at the same rate because, basically… everything is “dependent” upon how much weight, mass or force is applied or in the object.

[Social Studies] - "Native Tribe Study Presentation Summary"

Throughout the past few weeks in Social Studies with Ms Robertson, we've been focusing mainly on rain forests, as it is a place in which holds significance of our world. Here is our Native Tribe Study presentation, which was presented by myself, Lennyx, and Kacia. Thank you for visiting my blog, I appreciate it a lot!

Summary Paragraph

As we’ve just finished presenting our native tribe study on the Baka Pygmies, in conclusion, I shall say that the Baka Pygmies are very interesting indeed. They all share their advantages and disadvantages with each other and they are capable of succeeding more in life if they had the essential resources for their cultural survival. In saying that, the Baka Pygmies have a cultural significance upon the rain forest as they are the indigenous people of Central African rain forests. It is a pleasure to study native tribes around the world because I personally have an interest of researching about people that I haven’t or known about that live in our world.

Within our presentation, we have mentioned that the Baka Pygmies are nomadic people of Central Africa (along with other Pygmy tribes), which means that they live the life of travellers, travelling from place to place to find fresh pasture for their animals and etc. They are also in large threat of displacement and prejudice as the process of deforestation has taken up their area and now they suffer a severe lack of essential resources for their cultural survival. We’ve also mentioned all the information about who they are or what religions that they have, which is Animism.

To conclude this blog post, the Baka Pygmies are an importance or “significance” towards our world as they help take care of the rain forest that help us develop fresh air or oxygen for our daily activities. As stated on my last blog post about the significance of the rain forest, the rain forest is important to us because it is a place that produces oxygen (O2) and carbon dioxide (CO2), and also the process of photosynthesis was included, and the phenomenal aspects of these processes in the rain forests are from plants/trees and decay in which we use as fossil fuels. Thank you very much for your time!