poppin' corn lab

This week in science we are learning about the weather, to help us understand we are doing different labs and activities. One of these activities is popping popcorn in a microwave. The lab showed radiation which is one way for heat to travel, the microwave sends microwaves to heat the objects inside the machine hence the name microwave. Heat causes little traces of water in the kernel to move around really fast, because the heat energy is making the water molecules to move around. The water needs more space to move around in so it makes the kernel explode and the outer shell of the kernel breaks.