A spider has eight legs. An insect has six legs, so a spider is not an insect. Many spiders spin webs out of silk. The silk comes from their bodies. When a bug flies into the web, it gets stuck. Then the spider has food to eat.
Try this question: What do many spiders make their webs out of?
At night you can often see the moon. The moon does not make its own light. It shines because light from the sun bounces off it. The moon seems to change shape. Some nights it looks round. Other nights it looks like a thin slice. The moon goes around Earth about once a month.
Try this question: How long does it take the moon to go around Earth?
Penguins are birds, but they cannot fly. Their wings work like flippers. Penguins use them to swim fast in cold water. Many penguins live where it is very cold. They have thick feathers and fat to keep them warm. Penguins eat fish.
Try this question: What keeps penguins warm?