Mark observes that when his father throws a basketball, it bounces higher than when Mark throws the same ball. He wonders, "Is this because my dad is much taller than me?" What can Mark do to best answer his question? Shop for another basketball. Throw the ball from different heights. Watch a basketball game. Ask his father why he thinks this happens.

Dr. arenas is a scientist who has been trying to determine if increasing pressure will increase the sound that occurs when two chemicals explode. it measures the volume of the sound that occurs at the minimum pressure at which the explosion will occur. it then increases the pressure and measures the volume of the explosions that occur. what kind of investigation is the scientist conducting?