
Glass is melted in a furnace. The furnace is very hot—hotter than lava! Glassblowers place a long metal pipe into the furnace. They roll it to get the glass out of the furnace.
Photo Credit: kaca kaca/Shutterstock
It’s fall. Farmers are busy harvesting their crops. Let’s take … read more
Food scientists make our food safe. They study ways to … read more
Many animals help plants in this way. The most common … read more
© 2026 McGraw-Hill Education. All Rights Reserved.