Make a sound cone to hear sounds your ears alone can't hear!
Spacecrafts send out radio waves which get weaker as they travel. That's why NASA uses dish antennas to "listen to" radio waves coming in from space!
Here's how to make your own sound cone that helps to hear sounds your ears alone can't hear.
What's in the night sky?
What are the Effects of UV Rays?
The Sun is Earth's main source of energy. It gives off heat and light, keeping our planet warm and makes life on Earth possible.
However, ultraviolet (UV) light from the Sun can have harmful effects. Try this simple experiment to find out the effects of UV rays.