What makes water drinkable? Filtration – The clear water on top passes through filters composed of sand, gravel and charcoal to remove dissolved particles such as dust, parasites, bacteria, viruses and chemicals. Disinfection – Chlorine or chloramine is added to kill parasites, bacteria, viruses and germs. How do you sanitize water? Boil water, if you […]
What is a real life example of a single replacement reaction?
What is a real life example of a single replacement reaction? An example of a single replacement reaction occurs when potassium (K) reacts with water (H2O). A colorless solid compound named potassium hydroxide (KOH) forms, and hydrogen gas (H2) is set free. The equation for the reaction is: 2K + 2H2O → 2KOH + H. […]
What is needed to stop a moving object?
What is needed to stop a moving object? The force stopping the object’s motion might be an obvious one – the ground! Friction is a force that slows or stops motion. Friction is the resistance to motion created by two objects rubbing against each other (the sled and the snow, for instance). Even air causes […]
Why do blue objects look blue?
Why do blue objects look blue? Objects that appear blue do so because they reflect blue light but absorb all other colors, so our eyes only see the blue light remaining. When a blue object absorbs the energy from non-blue light, it heats up. What Colour does a blue object appear in blue light? A […]
Which layer of the eye is highly vascularized?
Which layer of the eye is highly vascularized? choroid Which eye structure is known as the white of the eye? The eye has three main layers. These layers lie flat against each other and form the eyeball. The outer layer of the eyeball is a tough, white, opaque membrane called the sclera (the white of […]
What is skill and types of skill?
What is skill and types of skill? A skill is an ability to perform an activity in a competent manner. Skills can be classified into three main types: Transferable/Functional, Personal Traits/Attitudes, and Knowledge-based. The table below provides a description and examples of each skill type. What should I write in skills? Top Skills to Put […]
What forces act when you sit on a chair?
What are the 5 attitudes of a scientist?
What are the 5 attitudes of a scientist? There are nine scientific attitudes in action that will be identified: 1) critical-mindedness, 2) suspended judgment (restraint), 3) respect for evidence (reliance on fact), 4) honesty, 5) objectivity, 6) willingness to change opinions, 7) open-mindedness, 8) questioning attitude, and 9) tolerance of uncertainty [12]. What are examples […]
Why is science so interesting?
Why is science so interesting? Here is a list of why science is cool: Science helps you explain the phenomena around you, such as how glaciers are formed or how we get fruits from a plant. Science enables critical thinking and help us critically analyze a phenomena or observation. Science helps us converse rationally with […]
Why is the electric potential energy of two like charges always positive?
Why is the electric potential energy of two like charges always positive? The graphs of potential energy between two charges for like and unlike charges are shown below. For like charges, the potential energy is always positive, that is because we need to put energy in the system to bring like charges closer together. What […]