A thermos keeps drinks cold in the same way. The vacuum does not allow heat to move into the bottle. The heat stays outside. Your drink stays cool.
What Can You Do? How can you use a thermos?
Photo Credit: VP Photo Studio/Shutterstock
In the Know
Inventors Have Big Ideas
Edison invented the phonograph. We call it a record player. … read more
In the Know
Earth Day: Young People Against Climate Change
Earth Day is April 22. We think about how we … read more
In the Know
World Teachers’ Day
World Teachers’ Day is in October. Teachers are very important! … read more