Science experiments are a great way for year 7 students to learn by doing. These experiments are designed to help students understand the concepts of science in a fun and engaging way. Many of these experiments can be carried out with materials that can be easily found around the home or classroom. Here are a few simple science experiments that are suitable for year 7 students.

The Lemon Battery

This experiment is a great way to teach students about electricity and chemical reactions. All you need for this experiment is a lemon, two copper coins, two galvanized nails, and a voltmeter or multimeter. Begin by cutting the lemon in half and inserting a nail and a coin into each half. The nails should be about 2 cm apart and the coins should be about 1 cm away from the nails. Then connect the two halves of the lemon together with a wire. Finally, use the voltmeter to measure the voltage between the two nails. The lemon battery should produce a voltage of 0.8 volts. This is a great way to demonstrate how electricity can be produced using natural materials.

The Egg in Vinegar Experiment

This experiment is a great way to teach students about chemical reactions. All you need for this experiment is a raw egg, white vinegar, and a jar. Begin by placing the egg in the jar and covering it with vinegar. Leave the egg in the vinegar for 24 hours and observe what happens. After 24 hours, take the egg out of the jar and examine it. The egg should have become soft and rubbery. This is because the vinegar has reacted with the calcium carbonate in the eggshell and caused it to dissolve. This experiment is a great way to demonstrate the chemical reactions that can occur between different substances.

The Floating Penny Experiment

This experiment is a great way to teach students about surface tension. All you need for this experiment is a penny, a bowl, and a cup of water. Begin by filling the bowl with water and then placing the penny on the surface of the water. The penny should float on the surface of the water. This is because the surface tension of the water is strong enough to support the penny. This experiment is a great way to demonstrate the principles of surface tension.

The Lava Lamp Experiment

This experiment is a great way to teach students about density. All you need for this experiment is a bottle, vegetable oil, water, food coloring, and an Alka-Seltzer tablet. Begin by filling the bottle about half full with vegetable oil and then adding a few drops of food coloring. Next, fill the rest of the bottle with water and then drop the Alka-Seltzer tablet into the bottle. Observe what happens when the tablet dissolves. The food coloring should form streaks, or “lava”, in the oil. This is because the oil is less dense than the water and the food coloring is denser than both the oil and the water. This experiment is a great way to demonstrate the principles of density.

The Oobleck Experiment

This experiment is a great way to teach students about non-Newtonian fluids. All you need for this experiment is cornstarch, water, and a bowl. Begin by mixing two parts cornstarch with one part water in the bowl. Then, take a spoon and slowly stir the mixture. Observe what happens when you stir the mixture. The mixture should act like a solid when you stir it slowly, but should act like a liquid when you stir it quickly. This is because the mixture is a non-Newtonian fluid, which means that its viscosity changes depending on the force applied to it. This experiment is a great way to demonstrate the principles of non-Newtonian fluids.

The Walking Water Experiment

This experiment is a great way to teach students about osmosis. All you need for this experiment is two jars, water, food coloring, and paper towels. Begin by filling one jar with water and adding a few drops of food coloring. Then, place the paper towel in the jar so that it is completely submerged in the water. Next, fill the other jar with water and place it next to the first jar. Observe what happens over the course of a few hours. The water in the first jar should slowly “walk” up the paper towel and into the second jar. This is because of the process of osmosis, which is the movement of water from an area of high concentration to an area of low concentration. This experiment is a great way to demonstrate the principles of osmosis.

Conclusion

These are just a few of the many simple science experiments that are suitable for year 7 students. These experiments are a great way for students to learn by doing. Science experiments can be fun and engaging, and they can help students understand the concepts of science in a hands-on way.