Archives: Lessons

Renewable and Non-Renewable Energy Learning Objective In this lesson we will discuss the major types of renewable and non-renewable energy used by humans. Learning Outcomes By the end of this lesson you will be able to: Distinguish between renewable and non-renewable sources of energy. Distinguish between primary and secondary sources of energy. Discuss the use … Read more

Non-Renewable Resources Learning Objective In this lesson we will learn about Earth’s main non-renewable resources – soil, rocks, minerals, metals and fossil fuels. Learning Outcomes By the end of this lesson you will be able to: Define ‘non-renewable resource’. Discuss how soil is a non-renewable resource. Discuss how rocks, minerals and metals are non-renewable resources. … Read more

Renewable Resources Learning Objective In this lesson we will learn about Earth’s main renewable resources – sunlight, water, air and living things. Learning Outcomes By the end of this lesson you will be able to: Define ‘renewable resource’. Discuss how sunlight is a renewable resource. Discuss how water is a renewable resource. Discuss how air … Read more

Earth’s Natural Resources Learning Objective In this lesson we will learn how Earth’s natural resources can be classified as renewable or non-renewable, depending on how long they take to replenish. Learning Outcomes By the end of this lesson you will be able to: Define ‘natural resource’. Differentiate between renewable and non-renewable resources, with examples. Describe … Read more

Tides Learning Objective In this lesson we will learn how gravitational forces exerted by the Moon and Sun create tides on Earth. Learning Outcomes By the end of this lesson you will be able to: Explain how gravitational force affects objects. Describe how Earth’s gravitational force affects the Moon and how the Moon’s gravitational force … Read more

Lunar and Solar Eclipses Learning Objective In this lesson we will learn how lunar and solar eclipses result from specific alignments of the Moon, Earth and Sun. Learning Outcomes By the end of this lesson you will be able to: Explain how the Moon’s orbital plane affects the alignment of the Moon, Earth and Sun. … Read more

Phases of the Moon Learning Objective In this lesson we will learn how the Moon’s appearance changes during its orbit around Earth and from different locations on Earth. Learning Outcomes By the end of this lesson you will be able to: Explain why we see varying amounts of the Moon during its orbit around Earth. … Read more

Solstices and Equinoxes Learning Objective In this lesson we will learn how solstices and equinoxes relate to specific points in Earth’s orbit around the sun. Learning Outcomes By the end of this lesson you will be able to: Describe what solstices are and explain how they relate to specific points in Earth’s orbit around the … Read more

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