Issac Newton’s Third Law of Motion states that for every action, there is an equal and opposite reaction. This law is the basis for many things we see in everyday life, from the way a rocket propels itself through the air to the way a person pushes against the ground to walk. It is also […]
Issac Newton’s second law of motion states that the acceleration of an object is directly proportional to the force applied to it, and inversely proportional to its mass. In other words, the heavier an object is, the more force is required to accelerate it. The formula for this law is: F = ma Where F […]
Issac Newton’s first law of motion is the law of inertia. It states that an object will remain at rest or in motion until an external force acts upon it. What does this mean? Imagine that an object, such as a ball, is moving through space. How long will that ball continue to move? According […]
Anyone who has been to a swimming pool or to the beach is familiar with the idea that some things float, while other things sink. The question though is why do some things float, and other things sink. Is it their weight? Consider that a very large ship easily floats on the ocean while a […]
You have probably heard the word “capacity” before. It refers to how much of something can be stored. For example, if we talk about the capacity of a battery we are referring to how much power the batter can hold. If we talk about the storage capacity of a computer, we are referring to how […]
Have you ever flown in an airplane? If you have, then what did you do during your flight? Did you read a book? Watch a movie? Sleep? Whatever you did, you probably trusted that the pilot knew what they were doing, and that they would get you to the correct destination. Did you consider though […]
Living things interact with their environments. This includes cells, which take in nutrients and expel waste. They do this through active and passive transport. Active transport requires energy, while passive transport does not. Examples of active transport include cells taking in glucose against a concentration gradient. Meaning that the cell must use energy to bring […]
Density is a measure of how much mass an object has in a given volume. In other words, it is a measurement of how compact an object is. The more compact it is, the more density it has. The formula for calculating the density of an object is: density = mass/volume Notice how this formula […]
Measuring the volume of a regular-shaped (cube object) is easy. All you have to do is multiply the length times the height times the width. But how do you measure the volume of an irregularly shaped object? How do you determine the volume of a rock, a toy, or a crown? The solution to this […]
Everything in the Universe is made up of matter, which means that it has mass. When gravity is present, everything in the Universe also has weight. These two attributes (mass & weight) are similar but they are not the same thing. Mass refers to the amount of matter in an object. Objects with more mass […]
