Basic Science

Waste Management: Types of Waste

len Alfred Ajibola - Tue, 12th February, 2019 @ 10:23: AM

Topics in Basic Science

Len Academy Examination Questions for Basic Science, JSS2, 2nd Term Len Academy Examination Questions for Basic Science, JSS3, 3rd Term Len Academy Examination Questions for Basic Science, JSS3, 2nd Term Primates - Characteristics of Primates Effects of Improper Waste Management Waste Management: Causes of Waste Concept of Mass and Weight Sources, Functions and Deficiencies of Mineral Salts (Macro-nutrients) Sources, Functions and Deficiencies of Mineral Salts (Micro-nutrients) Len Academy questions for Basic Science JSS1, second Term Len Academy mid-term test questions for Basic Science JSS1, 2nd Term Micro organisms causing food, water and air borne Diseases Vectors - Examples of Vectors, Vector borne Organisms and the Diseases they cause Bones of the Human Skeleton Meaning of Drugs, Type of Drugs and Side effects of Drugs Immunization, Processes involved in immunization and its importance Food: Carbohydrates and Sugars Uniqueness of Man: Unique Characteristics of Man Waste Management: Types of Waste Matter: Concept of Matter

Academic Questions in Basic Science

Please check out our Test Your Knowledge page to see all Questions and Answers

Which of the following statement is FALSE concerning mass and weight?

  • A. Mass is the amount of matter in a body

  • B. The element hydrogen has the smallest mass

  • C. You will weigh more on planet jupiter than earth

  • D. Weight is a function of gravity

  • E. Mass and Weight have different Standard International (S.I) Units

  • F. None of the above

Which of the following statement is FALSE concerning matter?

  • A. Anything considered as matter must either have mass or occupy space

  • B. Air is an example of matter

  • C. Plasma is a state of matter

  • D. Chemistry is considered as the study of matter and the changes they undergo

  • E. Vacuum is a space completely void of matter

  • F. Matter will always take up space no matter how small or invincible it is to the eyes

Which of the following is NOT matter?

  • A. Atom

  • B. Molecule

  • C. Ion

  • D. Bacterium

  • E. Virus

  • F. None of the above

The ultimate source of energy is _____.

  1. Plant
  2. Sun
  3. Food
  4. Water
  5. Air
  6. Earth

The speed of wind is measured with a wind vane.


The nutrient majorly found in the liver is _____.

  • A. Carbohydrate
  • B. Starch
  • C. Protein
  • D. Fats
  • E. Oil
  • F. Lipids

A body at rest possess _____ energy.

  • A. Kinetic
  • B. Potential
  • C. Mechanical
  • D. Chemical



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Waste Management:

One of the ways to eradicate diseases in our world today is to put in place an efficient and effective waste management system.

Waste Management can be defined as the process of collecting, processing, recycling and controlling any material considered as waste.

Please read on the Effects of Improper Waste Management here.

In a country like Nigeria, Millions of tons of waste are produced yearly, but the fact is: "less than 20% of these wastes are recycled". This is one reason why lots of waste are visible on the major roads and various areas of residence. These wastes also litter on roadside, in landfills, gutters and ditches. This is generally bad for the society because:

Note: Wastes are generated from homes, factories, market places, hospitals, schools, industries and many other places. Apart from the fact that it’s an eyesore, it will adversely affect national growth and development.

Please read on the Functions of Government here.

Types of Waste

Wastes can be classified into into various types. Some of these classifications include:

  1. Biodegradable Waste: These are wastes that can be broken down by the actions of living organisms. Examples include various food materials like yam and orange.
    You can read on the Problems of Agriculture in Nigeria here.

  2. Non-Biodegradable Waste: They are wastes that cannot broken down by the actions of living organisms. Examples are nylons and plastics.
  3. Refuse: They are simply considered as solid wastes. We would normally put them in the dustbin before they are eventually discarded. Examples are sachets, tins, papers, solid food materials, nylons and so on.
    Please read on the Causes of Waste in a Society here.

  4. Sewage: These are generally considered as liquid wastes. Sewage wastes are generally channeled into their appropriate disposal systems. Examples include waste water (from cooking, bathing, washing and so on), urine and human excreta.
  5. Recyclable Waste: These are waste materials that can be processed into new and useful products. The utilization of recyclable waste are of cost benefits to factories that process them.
    In Nigeria for instance, we see various persons on dump sites in search of recyclable wastes; which they will sell off to manufacturing factories. Examples of recyclable waste include, iron, aluminum, plastics, tin, batteries and computers.
    Please read more on Production here.

  6. Electronic Waste: These are wastes that are associated with various electronic devices like monitors, televisions, keyboards, CPUs and so on. Electronic wastes are also referred to as e-waste.
    Please read the Internet of Things here.

  7. Green Waste: Green wastes are biological in nature and will include any waste that can ferment to form compost. For this reason, they can serve as fertilizers to plants.
    Products that comprise green waste will include fresh leaves and kitchen waste that can be broken down by micro-organisms.
    Please read the Agricultural Terms and Meanings here.

  8. Biomedical Waste: They may also be referred to as hospital waste. They include any waste that contain (or will eventually contain) an infectious substance. They also include laboratory and hospital generated wastes from various test and treatments; for instance syringes, infusion kits, blood, bandages and so on.
    You can read on the Layers of an Artery here.

  9. Metabolic Waste: These are waste that are generated from various metabolic activities in living organisms. Examples are sweat, urine, carbon(IV)oxide, oxygen (in plants) and so on.
    It is important to state that feces is NOT a metabolic waste since it isn't a product of metabolism. (Think of metabolism as the processes that concerns the breaking down and building up of substances in organisms). To this end, feces are simply considered as undigested materials that weren't absorbed into the body system in the first place.
    Please read on the Basic Characteristics of Living Organisms here.

  10. Radioactive Waste: These waste can be very dangerous since they contain radioactive materials.
    A waste is considered to be radioactive if they contain radionuclides at a concentration greater than their clearance values as stipulated by a country's regulatory authority.
    Radioactive products are generated via nuclear fusion and nuclear fission reactions; thus are regarded as waste products from both reactions (nuclear fusion and fission). By-products of nuclear power are typical examples of radioactive wastes in our world.
    Radioactive waste can be classified into the followings:
    (a) Very Low-Level Waste (VLLW).
    (b) Low- and Intermediate-Level Waste - Short Lived (LILW-SL).
    (c) Low- and Intermediate-Level Waste - Long Lived (LILW-LL).
    (d) High Level Waste (HLW).
  11. Chemical Waste: These are wastes generated from harmful chemicals (from chemical producing industries).
    Chemical waste are required to be carefully disposed by the factories that manufacture them since some can be toxic.
    Examples of chemical waste include batteries, reagents, oils, solvents, substances containing lead and mercury, Chlorofluorocarbon (CFC), acids, bases, salts and so on.
    Please read on the Physical and Chemical Properties of Acids here.

  12. Animal Product Waste: These are wastes generated or harvested from agricultural animals (livestock) with the exception of meat from the animal's muscle. Examples include blood, milk, eggs and fats.

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Alfred Ajibola is a Medical Biochemist, a passionate Academician with over 7 years of experience, a Versatile Writer, a Web Developer, a Cisco Certified Network Associate and a Cisco CyberOps Associate.

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Amazing facts in Basic Science

Rasceta is the name given to the lines on your ✋ palm ✋

Goats have rectangular pupils in their eyes.

Think of the pupil as a hole located in the centre of the iris within of the eye.

Note: To get an idea of an iris; 'when one is said to have blue eyes', it's because the iris is blue

Among all land animals, 🐘 Elephants 🐘 have the longest gestation period.

They stay pregnant for 22 months before giving birth to their young

🦘 Kangaroos 🦘 can't walk backwards

The 🥛 milk 🥛 of an 🦛 hippopotamus 🦛 is pink in color

The seed of all fruits are present on the inside with the exception of one.

That exception is 🍓 strawberry 🍓

🍓 strawberry 🍓 has it's seed outside the fruit

It actually takes 🍍 pineapples 🍍 2 years to grow

The liquid inside a coconut 🥥 can be used as an excellent substitute for your blood plasma

Facts on Elephants - Len Academy

Elephants can't jump


The eyebrow is an area of dense, delicate hair just above the eye.

Eyebrows perform two main functions:

  1. Protects our eyes against sweat, rain, dirt and other atmospheric contaminants.
  2. It helps us express our emotions.

Eye Brow - Len Academy

Eyebrow modified in the form of Nike logo.

Note: Eyebrows can also be modified to enhance beauty.

All fruits have seeds.

There is nothing like a naturally occurring seedless fruit. Even banana, coconut and pineapple have all got seeds.

Weight can be defined as the force of gravity acting on an object.

If you traveled to space, you would be weightless because there isn't any force of gravity acting there. We all have weight on earth becasue the force of gravity acts here.

Weight is measured in Newton

Please read on the concept of Mass and Weight here

Mass is the amount or quantity of matter (substance) contained in a body. For instance, everything you are composed of, both from within and outside will make up your mass.

Mass is constant throughout the universe. You will have the same mass on earth and moon respectively.

Mass is measured in gram or kilogram and it's quite different from weight.

Matter is anything that has mass and occupy space.

Matter can exist in four states namely:

  • Solid
  • Liquid
  • Gas
  • Plasma