watermelon riddles   

When it comes to me, you go on red and stops on green. What am I?

I am green from outside. red from inside. I am large summer fruit. Who am i?

I am green. when you cut me open I am read you eat me in summer. Who am i?

This fruit has a striped shell and a soft, watery centre with lots of seeds:

I am a large fruit, oval in shape. Green on the outside, red on the inside. Made of water and many seeds. Who am I?