Choose between "worm" and  "caterpillar". Question: A worm and a caterpillar are crawling across a fallen tree trunk. The worm is not as speedy as the caterpillar. Which will take longer to get across the tree trunk? (A) worm (B) caterpillar
worm

Choose between "desk" and  "display case". Question: A model car rolling across a desk is experiencing more friction then one rolling across a display case. Which surface will give the model car a rougher ride? (A) display case (B) desk
display case

Choose between "empty dump truck" and  "dump truck full of iron ore". Question: An empty dump truck and a dump truck full of iron ore start towards each other, as fast as they can, from opposite ends of a long street. Which truck makes it 100 feet before the other truck? (A) the empty dump truck (B) the dump truck full of iron ore
empty dump truck