Kids Riddles

Question:

Look at my apple, keep me near.

Listen closely, I'll put worms in your ear.

What am I?

Question:

What is the most common use of cowhides?

Question: There was once three trees. The first tree did whatever the third tree did, and the third tree did what ever the second one does. What happens if tree number two gets cut down?

Question: 7 frogs are sitting on a log. 1 of them decides to jump off of the log. At this moment how many frogs are on the log?

Question: I'm measured in temperature and time, but have neither.

What am I?