Now that we're done with circuits, we are going to talk about heat transfer and temperature. This video explains the laws of thermodynamics and covers the three methods of energy transfer (conduction, convection, and radiation, as well...

Exam tip: always show units when performing calculations, because missing units might be penalized by the markscheme! This lesson will continue our crash course on units, focusing on SI prefixes and simple unit...

The Ancient Greeks believed that everything is made by combining four elements: earth, water, air and fire. It turns out that there’s actually seven elements in science – watch this video to find out what they are! This lesson will...

The Ancient Greeks believed that everything is made by combining four elements: earth, water, air and fire. As it turns out, there are seven elements in science – watch this video to find out what they are! This lesson will introduce...

In this video, we work an example problem for freezing point depression in physical chemistry.

This video explains the relationship between energy and changes of states in matter. It discusses the different changes of state, such as melting, boiling, and condensing, and the fixed temperatures at which they occur. The concept of...

You might have noticed that if you are trying to boil a lot of water it takes longer than if you only wish to boil a small amount of water. This is all because of something called ‘heat capacity’. Keep watching to learn more. Before we...

In this video, students learn how to use positive and negative numbers by understanding temperature. The lesson covers the concept of a vertical number line, the difference between Celsius and Fahrenheit, and how to interpret different...

This video illustrates the many everyday ways we measure things, and the importance of measurement in science. Concepts and terminology: length, liquid, mass, scale, temperature, and time.

Upon viewing the Measuring video series, students will be able to do the following: Generally explain that the process of measuring involves making observations of things using tools. Understand that measurements often involve the use...

Literal equations are formulas for calculating the value of one unknown quantity from one or more known quantities. Variables in the formula are replaced by the actual or "literal" values corresponding to a specific instance of the...

Upon viewing the The Changing Phases of Matter video series, students will be able to do the following: Explain that phases of matter, also called states of matter, are the physical forms matter can take. State the four phases of...

This video teaches how to identify and interpret intercepts using the line of best fit. It explains that in exact relationships, the intercept has a clear meaning, while in inexact relationships, the intercept represents the expected...

Students will learn about the different layers of the atmosphere. The changes in the atmosphere are explained using examples of contemporary environmental conditions brought about by human behavior. The oxygen cycle and the carbon cycle...

The United Nation's expert panel on climate change on Sunday highlighted the gulf between international goals to fight global warming and what is being done to attain them.

Dr. Rajendra K. Pachauri, chairman of...

Sep.10 -- Miners are among the biggest greenhouse gas emitters, but some companies in the industry are hoping to change that. BHP Group unveiled new plan to reduce its carbon impact today, but it could be too late. Greenhouse gas...

Oct.22 -- Climate change is one of the official topics for discussion on the debate. Joe Biden’s $2.2 trillion Green Plan promises to put the U.S. on a path to 100% clean energy, net-zero carbon emissions no later than 2050. It also vows...

Laura Millan, Reporter, Bloomberg Green takes us inside Bloomberg Green's examination of what collective failure at the COP talks would mean for the host country and what its people are doing to adapt today.