TODAY Importance of Megastructureshandout What is a force
- Slides: 17
• • TODAY: Importance of Megastructures-handout What is a force? • Types of forces • Worksheet
FORCES: 1) 2) 3) 4) 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
A force is an action that makes something or someone move. 3 Main Forces: push pull twist
Forces can make things: Speed up Slow down Change direction Change shape
Click on the 2 pictures that show something being pushed. twis t l l u p pull
Click on the 2 pictures that show something being pulled. t s i tw push twist
Click on the 2 pictures that show something being twisted. push pull h s u p
Some objects use more than 1 force to get them moving. When you ride a bicycle you push on the pedals and pull on the handlebars. When you open a door you twist the handle and pull or push the door.
See if you can identify which force or forces are being used in these photos. The seed is being pushed into the ground.
The boy is pushing the dough with his hand.
The hand is twisting the knob to turn on the oven.
The door is being pulled open.
The little girl is pushing her friend in her wheelchair.
The horses are pulling the old fashioned plough.
The screwdriver pushes the screw into the wood.
Could you spot the different forces? Let’s have one more try. What forces can you see in these pictures pull twist push