| Lesson start ideas | Give a creative idea how to begin a lesson |
| Which subject | Physics |
| What age group | Year or Grade 10 |
| What topic | Pressure |
| Quantity | 1 |
| Any other preferences |
Objective: To introduce and explain the concept of pressure and its significance.
Hook: Imagine you are standing on a bunch of balloons, suddenly you begin to feel the balloons popping underneath your feet. What do you imagine is happening? That's right, a tremendous amount of pressure is building up. But what exactly is pressure? And how does it work in the world around us? Today we are going to talk about it all.
Engagement: To start off, think about a time when you tried standing on a single leg. You might notice that your one leg feels strained as your body pushes all the weight on it. Similarly, in physics, pressure is the measurement of the force applied per unit area.
Content:
Pressure is measured in pascals (Pa) which is the unit used for force per unit area.
The formula for pressure is P = F/A, where P is pressure in pascals, F is force applied in Newtons and A is the area in which the force is applied in square meters.
Examples of pressure include air pressure, water pressure and even atmospheric pressure.
Air pressure is what makes it possible for planes to fly. Planes have wings that are shaped in a way to create a low-pressure area above the surface and a high-pressure area below the surface, this difference in pressure creates an upward force called lift.
Water pressure is a fascinating concept that we experience every time we take a dip in the pool. As we go deeper into the pool, the pressure around our body increases. This is because water is much denser than air and therefore exerts more force per unit area.
Lastly, atmospheric pressure refers to the weight of the air on the earth's surface. This pressure is responsible for natural phenomena like wind and storms.
Pressure plays an essential role in the world around us. Understanding its mechanisms and significance will allow us to appreciate its importance and develop a deeper understanding of the world we live in.
Conclusion: In conclusion, we have learned that pressure is a measure of force applied per unit area. It is an essential concept in physics that plays a significant role in the world around us. From the atmosphere we breathe to the planes we fly in, pressure is a crucial aspect that impacts many of the things we do in our day-to-day lives.