The bowling ball exerted force on the bowling pin, so it got knocked over! Force is the push or pull upon an object. Since the bowling ball moves and hits the bowling pin, the force causes the bowling pin to move, too. What's the effect?

The bowling ball exerted force on the bowling pin, so it got knocked over! Force is the push or pull upon an object. Since the bowling ball moves and hits the bowling pin, the force causes the bowling pin to move, too. Which sentence shows the effect?

Is force at work in other sports? Yes, it is! Think about baseball. The ball could not fly out of the stadium by itself. The pitcher uses the force of his or her arm to make the ball go. The batter uses force to make the bat hit the ball, so the ball will move towards the outfield. What is the effect?

Is force at work in other sports? Yes, it is! Think about baseball. The ball could not fly out of the stadium by itself. The pitcher uses the force of his or her arm to make the ball go. The batter uses force to make the bat hit the ball, so the ball will move towards the outfield. What is the cause?

What about football? The same force the pitchers use in baseball works in football, too. The ball cannot move by itself, the quarterback has to use force to throw the ball to another player. Which sentence shows a cause?

What about football? The same force the pitchers use in baseball works in football, too. The ball cannot move by itself, the quarterback has to use force to throw the ball to another player. What is the effect?

Here's a different situation: What happens when two football players who have the same strength go to go block each other? They have the same strength and so they might have the same force on the other player. What happens if two objects that have the same force try to push from opposite sides? Nothing! The players would stay in the same spot, trying to force the other, until the referee blows the whistle. What is the cause?

Here's a different situation: What happens when two football players who have the same strength go to go block each other? They have the same strength and so they might have the same force on the other player. What happens if two objects that have the same force try to push from opposite sides? Nothing! The players would stay in the same spot, trying to force the other, until the referee blows the whistle. Which sentence shows the effect?

Force is not just at work in sports, either. You can experiment with force right now! Get a block. Use one hand to exert force on the block by pushing it along the surface of a table (not too hard, you don't want to break anything!) What happens? The force makes the block slide. Which sentence shows the cause?

Force is not just at work in sports, either. You can experiment with force right now! Get a block. Use one hand to exert force on the block by pushing it along the surface of a table (not too hard, you don't want to break anything!) What happens? The force makes the block slide. What is the effect?

Now try putting one hand on each side of the block and push your hands together. Does the block move? Probably not, since you are probably exerting the same amount of force on each side of the block. If there is more force on one side of an object, it will move. If there is the same amount of force on all sides of the object, it will stay still. Have fun experimenting with force!  How does the author organize this paragraph?

Now try putting one hand on each side of the block and push your hands together. Does the block move? Probably not, since you are probably exerting the same amount of force on each side of the block. If there is more force on one side of an object, it will move. If there is the same amount of force on all sides of the object, it will stay still. Have fun experimenting with force!  Why does the author ask the reader to experiment with force?

Now try putting one hand on each side of the block and push your hands together. Does the block move? Probably not, since you are probably exerting the same amount of force on each side of the block. If there is more force on one side of an object, it will move. If there is the same amount of force on all sides of the object, it will stay still. Have fun experimenting with force!  Which sentence shows the effect?

Now try putting one hand on each side of the block and push your hands together. Does the block move? Probably not, since you are probably exerting the same amount of force on each side of the block. If there is more force on one side of an object, it will move. If there is the same amount of force on all sides of the object, it will stay still. Have fun experimenting with force!  Which sentence shows the cause?