Pushes & Pulls
Is a throw a push or a pull?
push
Name 2 types of bridges.
Pillar, arch, suspension
When there is extreme friction, what can happen?
It creates fire.
Magnets attract to ________ and ________.
iron and steel
Are paperclips magnets? Why or why not?
They are not magnets because they are not made of iron or steel. They do become magnetized for awhile, but it is only temporary.
Is towing a car a push or a pull?
pull
Why are pillar bridges and arch bridges stronger than board bridges?
They give more support in the middle of the bridge and can support a larger load.
Why can you go down a slide very fast?
Low friction, high gravity
When magnets push apart, they are _______
repelling
What was special about the one final rubber band that caused the watermelon to burst?
It tipped the balance of force (push) to break the watermelon.
Why was a suspension bridge a good design for the Golden Gate Bridge in San Francisco?
Because ships had to pass underneath the bridge.
Why is it hard to win a tug-of-war against a group of teachers?
Teachers create a lot of friction with their ability to push.
Why did Truman's 5th paperclip not hold on to the 4th paperclip?
The magnetic force got weaker the further away from the magnet.