Cutting String With The Sun Weather Science Experiment
In this fun and easy science experiment, we’re going to explore and investigate weather and the sun by seeing if we can cut string with the sun.
Important: Adult supervision is required.
- A jar with a lid
- Piece of string
- Magnifying glass
- Tape the piece of string to the inside center of the lid.
- Put the lid on the jar so that the strings hangs down inside.
- Use the magnifying glass to focus the rays of the sun on the string for several minutes.
- The heat from the sun will become intense enough to burn through the string.
How it Works:
A magnifying glass is a convex lens that is used to magnify (make larger) an object or image. The convex lens is typically set in a frame with a handle. The convex lens of the magnifying glass will converge the sun rays when they pass through it. Sun rays carry energy and when the magnifying glass converges the sun rays into one point, its energy becomes concentrated enough to raise the temperature were the energy is focused. This can often raise the temperature of an item, in our case the string, past its ignition point.
Make This A Science Project:
Try this experiment with different diameters and types of string. Try dry leaves. Try pieces of paper. Try filling the jar with water and use a thermometer to determine if the water temperature rises.