Here's a logic test: A truck driving over a flat stretch of road will make _____ than the truck driving over mounds of sand. (A) more heat (B) less heat  Choose the answer between "road" and "sand".
sand

Here's a logic test: Dennis is rolling two marbles down the sidewalk. He rolls them both at the same time, in the same way. The blue marble goes a longer distance down the sidewalk than the green one does. The faster marble is (A) green (B) blue  Choose the answer between "blue marble" and "green marble".
green marble

Here's a logic test: A tree trunk is thicker then a tree leaf. Which part of the tree is the stronger one? (A) leaf (B) trunk  Choose the answer between "trunk" and "leaf".
leaf