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
Different Ways We Learn
Isn’t it fun to learn something new? At school, we … read more
In the Know
Morse Code Can Be Sent with Flashes of Light
On a dark summer night, you can use a flashlight. … read more
In the Know
Fire Facts
Fire can be dangerous. Never play with matches. Never play … read more