Chemistry – Intro, Properties of matter – P2 Read More »
KEY IDEAS • A chemical reaction is a process where substances change into new substances. • Fermentation is a process where microorganisms convert sugars into alcohol or acids. • Photosynthesis is the process by which green plants convert light energy (sunlight) into chemical energy. • Respiration is the process by which cells convert glucose into […]
Chemistry – Intro, Properties of matter – P1 Read More »
Throughout this section, you will explore chemistry and its branches, focusing on essential topics such as the storage of chemicals and laboratory safety. You will delve into the scientific method of inquiry, as well as key historical developments in atomic theory including Bohr’s model of the atom, Dalton’s atomic theory, J.J Thomson’s cathode ray tube
Physics – Introduction, Matter – Part 2 Read More »
APPLICATION OF PHYSICS IN VARIOUS SECTORS OF THE ECONOMY AND CAREER EXPLORATION Definition and Meaning of Physics Physics is the scientific study of matter, energy, and the fundamental forces of nature. It originates from the Latin word “physica” meaning “natural thing”. It seeks to understand the behaviour and properties of the physical universe, from the
Physics – Introduction, Matter – Part 1 Read More »
At the end of this section, you should be able to: Identify careers that are related to Physics in various sectors of the economy. Use basic mathematical concepts to solve problems i.e. trig ratios, Pythagoras theorem, sine and cosine rules, and indices. Identify the basic units in Physics. Determine the dimensions of common quantities e.g.
Science Notes – Matter Read More »
THE DIFFERENT BUILDING BLOCKS OF MATTER Matter may be defined as: The “material” the universe is made up of; and atoms are the building blocks of matter. Atoms are the smallest particles of an element that still have the element’s properties. Elements, in turn, are pure substances that make up all matter. Atoms, however, are
Science Notes – What happens during inhalation and exhalation Read More »
When you breathe in or inhale, your diaphragm contracts (tightens) and moves downward. This increases the space in your chest cavity into which your lungs expand. The intercostal between your ribs also help enlarge the chest cavity. They contract to pull your rib cage both upward and outward when you exhale. WHAT ARE THE STAGES
Science Notes – Ways to Make Mines More Environmentally Friendly Read More »
Top 10 Ways to Make Mines More Environmentally Friendly 1. Closing illegal and unregulated mines In context with enforcing regulations and maintaining steadfast legislation regarding a mine’s behavior and processes, the strict and swift closing of illegal or unregulated mining activity will set an environmental precedent within the industry. For example, before 2010, most mines
Skeletal systems – The mammalian skeleton Read More »
Structure of the mammalian skeleton The typical human skeleton consists of 206 bones in adults. More bones are present at birth, which gradually fuse together as the body matures. The skeleton is divided into two parts. The axial skeleton includes the bones of the skull, face and spine along with the ribs and breastbone. The
Science Notes – Functions of the human skeleton Read More »
The typical human skeleton consists of 206 bones in adults. More bones are present at birth, which gradually fuse together as the body matures. The skeleton is divided into two parts. The axial skeleton includes the bones of the skull, face and spine along with the ribs and breastbone. The appendicular skeleton includes the bones
Science Notes – Land and sea breezes (Air movement) Read More »
A sea breeze describes a wind that blows from the ocean inland towards land. This breeze occurs most often in the warmer months because of the greater temperature differences between the ocean and nearby land, particularly in the afternoon when the land is at maximum heating from the sun. During the day, the sun heats