Like us on
Support Education

lenLenAcad

Free Online Education

Questions and Answers Key Points in Academics Quotes for Students Interesting Facts for Students

Academic Articles

Transport Layer: Layer 4 of the OSI model - ICT Ecological pyramid explained with its importance and limitations - Biology Importance of immunization - Basic Science Postural defects that affect the spine or backbone - PHE Types of Carbohydrates: Monosaccharides and Polysaccharides - Basic Science Carbohydrates: Disaccharides and Oligosaccharides - Basic Science Importance of forest: Forest reserves in Nigeria - Agricultural Science Wildlife reserves in Nigeria and its importance - Agricultural Science Belt Drives: Types of belt drive - Basic Technology Cooperation in civic education - Civic Education Solutions to air pollution - PHE Business Structure: What is a business structure? - Business Studies Advantages and Disadvantages of franchise - Business Studies Why does suffering and pain exist? - CRS Angles: Type of angles based on degree measurement - Mathematics Angle Pairs: Types of angle pairs - Mathematics Arms of Government: Functions of the Executive, Legislature and Judiciary - Government Le Chatelier's Principle: Changes in concentration and pressure in dynamic equilibrium - Chemistry Chemical Equilibrium: Dynamic Equilibrium in Chemistry - Chemistry Static and Dynamic Equilibrium explained with their Differences - Chemistry Child marriage and its consequences - Social Studies Consequences of Female Genital Mutilation - Social Studies Forgiveness: Jesus' teaching on Forgiveness and its importance - CRS What is Forgiveness? Jesus' teaching on Forgiveness - CRS Advantages of Inflation - Economics Disadvantages of Inflation - Economics Concept of Inflation in Economics - Economics Hindbrain: Medulla Oblongata and its features - Biology Principle of Marketing: People as a Marketing Mix and their Importance - Commerce Len Academy Examination Questions for Basic Science, JSS2, 2nd Term - Basic Science Food web explained with examples - Biology Scheme of work for Economics, SS1, First Term - Economics Scheme of work for Economics, SS1, Second Term - Economics Scheme of Work for Economics, SS1, Third Term - Economics Branches of Geography: Physical and Environmental Geography - Geography Ceramics: Types of Ceramics - Basic Technology Advantages and Disadvantages of Chain drives - Basic Technology Len Academy Examination Questions for Basic Science, JSS3, 3rd Term - Basic Science Len Academy Examination Questions for Basic Science, JSS3, 2nd Term - Basic Science What is a franchise? Types of franchise - Business Studies What is Honesty? Who is a Dishonest Person? Consequences of Dishonesty - Civic Education What is Corporation? Types, Advantages and Disadvantages of Corporations - Business Studies Scheme of Work for Government, SS1, First Term - Government Scheme of Work for Government, SS1, Second Term - Government Scheme of Work for Government, SS1, Third Term - Government What is Limited Liability Company? Its Advantages and Disadvantages - Business Studies Partnership in Business: Types, Advantages and Disadvantages - Business Studies Principle of Marketing: Positioning as a Marketing Mix - Commerce Principle of Marketing: Packaging as a Marketing Mix - Commerce Chemistry Scheme of Work, SS1, First Term - Chemistry Chemistry Scheme of Work, SS1, Second Term - Chemistry Chemistry Scheme of Work, SS1, Third Term - Chemistry Literature in English Scheme of Work, SS1, 1st Term - Literature in English Literature in English Scheme of Work, SS1, 2nd Term - Literature in English Literature in English Scheme of Work, SS1, 3rd Term - Literature in English Characteristics of Double Entry System - Accounts Examples on the Principle of Double Entry System - Accounts Advantages and Limitations of the Double System in Accounting - Accounts Elements of Promotion in Marketing Mix - Commerce Principle of Marketing: Promotion as a Marketing Mix - Commerce Biology Scheme of Work, SS1, First Term - Biology Biology Scheme of Work, SS1, 2nd Term - Biology Biology Scheme of Work, SS1, 3rd Term - Biology Prevention and Control of Crop Pests - Agricultural Science Economic Importance of Crop Pests - Agricultural Science Phrase: Types of Phrase - English Len Academy Questions for Basic Technology JSS3, 2nd Term, 2020 - Basic Technology Len Academy Question for Basic Technology, JSS3, 2nd Term, 2020, Part 2 - Basic Technology Classification of Insect Pests and their Economic Importance - Agricultural Science Jesus' teaching on Giving - CRS Concept, Advantages and Disadvantages of Multi-Party System - Government Belt and Pulley Drives: Types of Belt in Belt Drives - Basic Technology Seminal Vesicles and Bulbourethral Glands as Male Accessory Sex Organs - Biology Principle of Marketing: Place as a Marketing Mix - Commerce Agricultural Machines and their Uses - Agricultural Science Clause and Types of Clause explained - English Derived Units: Similarities and Differences with Fundamental Units - Physics Concept, Advantages and Disadvantages of Two-Party System - Government Male Reproductive System: Scrotum and its contents - Biology Principle of Marketing: Price as a Marketing Mix - Commerce Principles of Marketing: The 7 Ps of Marketing Mix - Commerce Conversion of Number Bases explained with examples - Mathematics Soil Erosion: Causes of Soil Erosion - Agricultural Science Ways to prevent Soil Erosion - Agricultural Science Essay: How to write the major types of essay - English Healthy Self-esteem: Characteristics and Benefits of Healthy Self-esteem - Social Studies Causes of Environmental Problems - Social Studies Effects of Environmental Problems and Solutions to Environmental Problems - Social Studies Compounds in Chemistry: Characteristics of Compounds - Chemistry Types of Mixture: Homogenous and Heterogeneous Mixtures - Chemistry Mixtures: Characteristics of Mixtures - Chemistry Functions of the Wholesaler - Economics Advantages and Disadvantages of the Wholesaler - Economics Wholesale Market: Who is a Wholesaler? - Economics Characteristics of the Wholesaler - Economics Brain: Introduction to the Human Brain - Biology Forebrain: Lobes of the Cerebrum and their Functions - Biology Cerebellum: Parts and Functions of the Cerebellum - Biology Midbrain: Division and Functions of the Midbrain - Biology Negative Feedback Mechanism in Homeostasis - Biology Factors necessary for Division of Labour - Commerce Disadvantages of Division of Labour - Commerce Advantages of Division of Labour - Commerce Arterial Disorders: Characteristics and Causes of Arterial Disorders - Biology Consequences of Drug Trafficking and Solutions to Drug Trafficking - Social Studies Drug Trafficking: Reasons for Drug Trafficking - Social Studies Gravity: Interesting facts on Gravity - Physics Asexual Propagation in Plants, Types and Examples - Agricultural Science Differences between Gymnosperms and Angiosperms - Agricultural Science Relative Density of Substances and Specific Gravity - Physics Retail Market: Who is a Retailer and Examples of Retailers - Economics Market: Types of Market - Economics Market - What is a Market in Economics? - Economics Self-esteem: How to overcome Low Self-esteem - Social Studies What is Low Self-esteem? Characteristics of Low Self-esteem - Social Studies Low Self-esteem: Causes of Low Self-esteem - Social Studies Physical Properties of Matter explained with Examples - Chemistry Chemical Properties of Matter explained with Examples - Chemistry Differences between Physical and Chemical Change - Chemistry Outbound Marketing explained - Commerce



Academic Articles

LenAcad
Contents of the scrotum: Epididymis, Vas deferens, Spermatic cord and Cremaster muscle - Biology
LenAcad
Fun facts in Biology - Biology
LenAcad
Amazing facts on Abraham Lincoln and John Kennedy - History
LenAcad
Functions of the network layer - ICT

See all academic articles here


Questions and Answers

A measurement of how much the velocity of an object changes with time is termed _____.

  • A. Displacement

  • B. Acceleration

  • C. Speed

  • D. Momentum

  • E. Velocity-Time graph

  • F. Average velocity

See more questions in Physics here

ANSWER: Acceleration

Acceleration is defined as the rate of change of velocity. Acceleration is also defined as the measurement of how much the velocity of an object changes with time.

  • Acceleration = Change in velocity/Change in time

 

If an object changes velocity after a fixed amount of time, then such acceleration is said to be constant (that is: constant acceleration).

 

 

We also have the concept of average acceleration in motion.

Average acceleration is the total change in velocity over a period of time, divided by the duration of that period.

Acceleration is a vector quantity and its Standard International (SI) unit is meter per second (m/s) or meter per second square (m/s2).

Which of the following differentiates velocity from speed?

  • A. Distance

  • B. Time

  • C. Momentum

  • D. Inertia

  • E. Direction

  • F. Distance and Time

See more questions in Physics here

ANSWER: Direction

The direction in which an object is moving is what differentiates velocity from speed. In short, velocity is defined as speed in a given direction. It is also defined as the rate of change of displacement.

Please read more on velocity and acceleration here

FA = -FB

FA is the action force while FB is the reaction force.

The above statement expresses _____.

  • A. Force and Acceleration

  • B. Force and Gravity

  • C. Force and Momentum

  • D. Newton's first law of motion

  • E. Newton's second law of motion

  • F. Newton's third law of motion

See more questions in Physics here

ANSWER: Newton's third law of motion

Newton's third law states that action and reaction are equal and opposite.

According to the third law of motion, if a body 'A' exerts a force FA on another body 'B', body B will in return exert an equal and opposite force FB on body A. The forces FA and FB are therefore equal in magnitude but opposite in direction.

Please read more on Newton's laws of motion here

Read more questions and answers here


Facts for Students

Cockroach is the fastest land animal on six legs

Read facts in Biology here

Laughing ape - Len Academy

Like humans, all apes laugh when tickled

Read facts in Biology here

Antibiotics fights and kills bacteria. However, they do nothing to a virus

Read facts in Basic Science here

The longest street in the world is Yonge street in Toronto Canada. It has a length of 1,895,807.232 meters or 1,178 miles

Read facts in Geography here

The only English word with five consecutive vowels is 'queueing'

Read facts in English here

Read more interesting facts here


Quotes for Students

The first problem for all of us, men and women, is not to learn, but to unlearn - Gloria Steinem

The act of unlearning is an excellent form of learning. Infact, you will need the skills of unlearning if you intend to become an expert in your desired field.

Do yourself a favor by unlearning, learning and re-learning on a daily basis

If you don't design your own life plan, chances are you'll fall into someone else's plan. And guess what they have planned for you? Not much - Jim Rohn

There's something special about you. It doesn't matter whether you work for a company or someone; what matters is the amount of investment you've made on yourself.

Investing in yourself is the best life plan you can design for your future

Smile - Len Academy

Peace begins with a smile - Mother Teresa

Never underestimate the power of your smile. It can lift up the depressed, improve the mood of the downtrodden and even discourage a suicidal attack. Also remember that your smile makes you more beautiful

Smile always for your own good and the good of others

The only person who is educated is the one who has learned how to learn …and change - Carl Rogers

To perfect your learning process, you must learn, unlearn and re-learn. Infact, we all need to learn how to unlearn those vices we know about ourselves.

Do you know that seeing the devastating consequences of vices (perhaps in movies or real-life) can initiate the unlearning processes in one who does such?

Read more motivational quotes here


key points for Students

God created human beings for the following reasons:

  1. To know Him

  2. To love Him

  3. To serve Him

  4. To be happy with Him forever

Our first parent, Adam and Eve enjoyed a life of complete happiness before they committed sin. They never knew what pain nor sorrow was until they disobeyed God. In short, both were perfect beings until they committed the sin of disobedience against God.

Disobedience may simple be defined as the failure to obey rules, command or someone in authority.

Adam and Eve were the first human beings to disobey God.

Please read more on the biblical account of first human disobedience here

Read key points in CRS here

Adam and Eve were able to commit sin (disobey God's command) because God had given them that special gift of free will.

The events written in Genesis 3:1-13 presents the story of the first human disobedience.

Now the snake was the most cunning animal that the Lord God had made. The snake asked the woman, 'Did God really tell you not to eat fruit from any tree in the garden?'

Genesis 3:1

Moral Lesson: The devil can come in any form and can tempt any man, woman, boy or girl, as far as he or she is of the age of reasoning.

Sometimes, satan creeps into one's life by asking simple questions. Notice that the snake (satan) did exactly this when it approached Eve to tempt her. To this end, we need to be at alert prayerfully because the evil one can tempt any human in any situation, place and at any point in time

Read key points in CRS here

Computer hardware is the collection of physical parts of a computer system.

Physical parts of a computer are those parts that you can see and touch. It may also be referred to as the 'equipment of the computer'.

When the computer case is opened (with a screwdriver), one would see the different hardware components inside of it. It's important to state that some other hardware components are present outside the computer case; and these are termed peripherals.

Below are hardware components seen inside the computer case:

  • Motherboard

  • Central Processing Unit (CPU)

  • Graphics Processing Unit (GPU)

  • Power supply Unit (PSU)

  • Northbridge

  • Southbridge

  • Peripheral Component Interconnect (PCI) slots

  • Network Interface Card (NIC)

  • Random Access Memory (RAM)

  • Ventilation fans

  • Heat sink

  • Hard Disc Drive (external present)
  • Solid State Drive (SSD)

  • CMOS battery

  • Optical Disc Drives (external present)

  • USB port, PS2 port, Ethernet port and other ports

  • Expansion Ports / Slots

Please read more on computer hardware here

Read key points in ICT here

Read more academic key points here


WAEC Past Questions

WAEC, English Past Questions and Answers, 1990 WAEC, English Past Questions and Answers, 1990, Part 2 WAEC, English Past Questions and Answers, 1990, Part 3 WAEC, English Past Questions and Answers, 1990, Part 4 English past questions and Answers, WAEC, 1989 English past questions and answers, WAEC, 1989, part 2 English past questions and answers, WAEC, 1989, part 3 English past questions and answers, WAEC, 1989, part 4 Commerce past questions and answers, WAEC, 1989 Commerce past questions and answers, WAEC, 1989, part 2 Commerce past questions and answers, WAEC, 1989, part 3 Commerce past questions and answers, WAEC, 1989, part 4 English past questions and answers, WAEC, 1988 English past questions and answers, WAEC, 1988, part 2 English past questions and answers, WAEC, 1988, part 3 English past questions and answers, WAEC, 1988, part 4 WAEC past questions and answers, Accounts, 2016 WAEC past questions and answers, Accounts,2016, part 2 WAEC past questions and answers, Economics, 2016 WAEC past questions and answers, Economics, 2016, part 2