Unit 1_Bones and skeletons_Science_Grade 3

W is ______.

Name the bone that moves when we chew food.

What is the function of skull?

What is the function of spine?

What is the function of arm bone?

When I lift a weight, the muscle at the front of my arm contracts and gets shorter. The muscle at the back of my arm ________ and gets _______.

What is the function of ribs?

When I lift a weight, the muscle at the front of my arm _____ and gets ______.

What are the bones of head called?

What is the row of bones in our back called?

What are the bones of chest called?