The Balloon-Powered Car Race
Today was the day of the annual school science fair. This year s theme was "Force and Motion," and the highlight of the day was the balloon-powered car race. Each student had built a small car and attached a balloon to it. When the balloon was inflated and then released, the force of the air rushing out of the balloon pushed the car forward. This demonstrated the basic principle that every action has an equal and opposite reaction. It was fascinating to see that the car with the biggest balloon didn t travel the farthest. Instead, it was the car with the medium-sized balloon that won the race. This showed the students that the magnitude of a force and its direction affects the motion of an object. The balloon-powered car race was not just fun, but also a great learning experience!
Question 1
What was the theme of this year s annual school science fair?
Gravity and Space
Energy and Environment
Force and Motion
Explanation. The text states that this year s theme was Force and Motion .
Water and Life
Nature and Animals
Question 2
What was the highlight of the science fair?
The chemistry experiment
The solar system presentation
The balloon-powered car race
Explanation. The text mentions that the highlight of the day was the balloon-powered car race.
The robotics display
The physics lecture
Question 3
What did the balloon-powered car race demonstrate?
The process of evaporation
The effects of gravity
The principle of every action has an equal and opposite reaction
Explanation. The story mentions that the balloon-powered car race demonstrated the principle that every action has an equal and opposite reaction.
The behavior of light
The process of photosynthesis
Question 4
Which car won the race?
The car with no balloon
The car with the smallest balloon
The car with the biggest balloon
The car with the medium-sized balloon
Explanation. The text says that it was the car with the medium-sized balloon that won the race.
The car with the most balloons
Question 5
What does the outcome of the race show about force and motion?
The bigger the force, the farther an object will go
The direction of a force has no effect on an object s motion
The smaller the force, the faster an object will go
The magnitude of a force and its direction affects the motion of an object
Explanation. The text explains that the outcome of the car race showed the students that the magnitude of a force and its direction affects the motion of an object.
Force has no effect on an object s motion
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