Archives: Lessons

Earth’s Tilt – Day Length and Seasons Learning Objective In this lesson we will learn how Earth’s tilt affects day and night lengths and how it causes the seasons. Learning Outcomes By the end of this lesson you will be able to: Describe Earth’s tilt. Explain how Earth’s tilt results in: Different day and night … Read more

Gears, Belt Drives and Chain Drives Learning Objective In this lesson we will learn how gears, belt drives and chain drives transfer forces and motion. Learning Outcomes By the end of this lesson you will be able to: Explain what is meant by ‘mechanical power transmission’. Describe gears, belt drives and chain drives and discuss … Read more

Wheels & Axles and Pulleys Learning Objective In this lesson we will learn how wheels and axles and pulleys provide mechanical advantage. Learning Outcomes By the end of this lesson you will be able to: Describe a wheel and axle and explain how it provides mechanical advantage. Discuss how a wheel and axle can be … Read more

Levers Learning Objective In this lesson we will learn about the different types of levers and how they provide mechanical advantage. Learning Outcomes By the end of this lesson you will be able to: Explain what a lever is and define the ‘effort’, ‘load’ and ‘fulcrum’. Define ‘class 1’, ‘class 2’ and ‘class 3’ levers, … Read more

Inclined Planes, Wedges and Screws Learning Objective In this lesson we will learn how inclined planes, wedges and screws provide mechanical advantage. Learning Outcomes By the end of this lesson you will be able to: Explain what an inclined plane is and describe how it provides mechanical advantage. Explain what a wedge is and describe … Read more

Simple Machines and Mechanical Advantage Learning Objective In this lesson we will learn how simple machines make tasks easier by reducing the amount of effort required. Learning Outcomes By the end of this lesson you will be able to: Describe what a simple machine is and name the six types of simple machines identified by … Read more

Non-Contact Forces Learning Objective In this lesson we will learn about three types of non-contact forces – gravity, magnetism and electrostatic forces. Learning Outcomes By the end of this lesson you will be able to: Explain what gravity is and describe how it affects the motion of objects. Discuss how gravitational force is related to … Read more

Balanced and Unbalanced Forces Learning Objective In this lesson we will learn about net force and compare balanced and unbalanced forces. Learning Outcomes By the end of this lesson you will be able to: Explain how most objects have more than one force acting on them, with examples. Define ‘net force’. Calculate net force for … Read more

Contact Forces Learning Objective In this lesson we will learn about three types of contact forces – friction, buoyancy and surface tension. Learning Outcomes By the end of this lesson you will be able to: Define ‘friction’ and explain how it relates to the motion of objects. Differentiate between kinetic and static friction, with examples. … Read more

Introduction to Forces Learning Objective In this lesson we will learn what forces are and how they affect objects. Learning Outcomes By the end of this lesson you will be able to: Define ‘force’. Describe how forces can cause a change in speed, direction or shape. Distinguish between push forces, pull forces and twist forces. … Read more