Amy is investigating modeling clay. She has five different colors. She rolls each one twenty times. Then she measures how long they are. The yellow one is 15 cm long. What does ‘cm’ mean?

In science you investigate to find things out. To do this you have to look very carefully, take measurements and write things down. You record your results. As well as writing, you might draw pictures, fill in boxes, or use photographs. Then you can share your results with others. This quiz is all about recording what you have found out when measuring and investigating.