Is there a difference in the reflexes of boys and girls?

Which ball bounces higher, a basketball, tennis ball or soccer ball?

Which material makes a parachute drop faster?

Does the size of the parachute affect how fast it falls?

Which bubble gum makes the biggest bubbles?

Which gum lasts longest?

Does exercise change how fast your heart beats?

Do mealworms prefer light or dark?

Do sow bugs prefer light or dark?

Does the type of food a mealworm larva eats affect how quickly it becomes a pupa?

Does the shape of our aluminum foil boat affect how much weight it can carry?

Does the size of a fruit affect determine how many seeds it has?

Does the temperature affect how fast a bean seed will germinate?

Do plants help stop erosion?

Does the rate of the water flow affect how quickly a canyon is formed?

Does the salinity (saltiness) of water affect its density?

What liquids can we add to baking soda to make a chemical reaction?

Are more scientists left handed?