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TODAY: Importance of Megastructures-handout What is a force?
Types of forces Worksheet
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FORCES: There are various types of forces that can apply to structures and objects in motion. Can you think of any type of forces on such megastructures as; Burj Khalifa Hoover Dam The World Golden Gate Bridge
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What are forces? A force is an action that makes something or someone move. 3 Main Forces: push pull twist
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Forces can make things:
Speed up Slow down Change direction Change shape
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Push Click on the 2 pictures that show something being pushed. twist
pull pull
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Pull Click on the 2 pictures that show something being pulled. twist
push
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Twist Click on the 2 pictures that show something being twisted. pull
push push
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When you open a door you twist the handle and pull or push the door.
Other Objects: Some objects use more than 1 force to get them moving. When you open a door you twist the handle and pull or push the door. When you ride a bicycle you push on the pedals and pull on the handlebars.
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The seed is being pushed into the ground.
See if you can identify which force or forces are being used in these photos. The seed is being pushed into the ground.
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The boy is pushing the dough with his hand.
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the knob to turn on the oven.
The hand is twisting the knob to turn on the oven.
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The door is being pulled open.
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her friend in her wheelchair.
The little girl is pushing her friend in her wheelchair.
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the old fashioned plough.
The horses are pulling the old fashioned plough.
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The screwdriver pushes the screw into the wood.
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Review: Did you get them right? push twist pull
Could you spot the different forces? Let’s have one more try. What forces can you see in these pictures push twist pull Did you get them right?
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