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Forces - Coggle Diagram
Forces
Contact Forces
Push
Facts: Push can be created by living thing and non-living things. The harder you pull the faster the object moves.
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Explanation: A push is the force that moves an object away from something. Pushing moves something in the direction of the push. The harder the push, the further the item goes.
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Observation:
- The factors that will influence how far the ball will go are, how hard the ball is hit, gravity, the angle the ball is hit, and the wind.
- An escalator uses a push force, because it pushes the person down or up it. Elevators also use the push force, because they push the person up. Air and heating systems push air out into a room to cool or heat it up.
- A push force can be a non-contact force. Tale a ball and a straw, for example. When you blow through the straw at the ball, the wind pushes the ball along. Without actually touching it.
Pull
Facts:When you are pulling an object against a surface, it can create friction, which holds back the movement of the sliding object being pulled.
Observation: 1. I don't think you can convert it into a push force.
- It can be a non-contact force. One example is a vacuum cleaner. It sucks and pulls objects to it using wind.
- An example of a mechanical system that uses a pull force is A vacuum cleaner or a crane. The crane pulls up loads of materials and the vacuum cleaner pulls in objects and dust.
Example: An example of pull force is when there is a tug of war. Both teams are pulling towards themselves.
Explanation: Pull is the force of bringing an object closer. We use the force of a pull when we move our bowl of ice cream closer to us, open a door, or climb up a rope.
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Twist
Example: When you get a jar and twist the lid so that it comes off. Another one is twisting a door handle.
Explanation: Twist is a force that is caused by rotating something like a lid at a stationary point. By twisting something, you turn it in a spiral shape.
Observation: 1. You can, because when you push something, if you push it in a spiral direction, then it becomes a twist force.
- A mechanical system that uses the twist force could be cogs, or a wheel . You have to twist both for them to work.
- I have no idea.
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Facts: Twist can also be called Torsion.The turning or twisting force that causes torsion is called torque.
Friction
Facts: When one object is sliding on another it starts to slow down due to friction. This means it loses energy. But, the energy doesn't disappear. It changes from kinetic energy to heat energy. That's is why we rub our hands together when it's cold. Friction can also generate static electricity.
Observation: When we did the friction prac, I observed that when we pulled the measuring tool faster, the amount of Newtons displayed would increase.I also observed that by adding on weights, then the wood block would become heavier and the Newtons would increase.
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Explanation: Friction is the resistance of motion when one object rubs against another. Anytime two objects rub against each other, they cause friction.
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Normal
Example: When you run into a wall or door, you hit it, instead of going through.
Explanation: The normal force is the force that surfaces apply to prevent solid objects from passing through each other.
Observation: There was nothing on One note to write about this and we have not doe a prac relating to Normal force.
Facts: If there was no normal force, you'd be slowly seeping into the ground. If there is no contact between objects, then there is no normal force.
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Non-Contact Forces
Gravity
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Facts, Attributes and Characteristics: Earth's gravity is very weak. A fridge magnet has stronger gravity then Earth.
An example of gravity in action is the Earth and the moon. The Earth has more mass so gravity is stronger on Earth. That is why astronauts float on the moon because gravity is weaker on the moon because it has less mass.
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Observation: I noticed about everyday life, that whenever we jump, we are pulled back down to earth because of gravity.
Magnetism
Example: When a magnets is near a paper clip, the paper clip is attracted to the magnet.
Facts: The most powerful magnet in the universe is actually a star called a magnetar. They are what is left over from supernova, and they are strong enough to destroy small planets if they get close enough.
Magnets are very ancient. Today’s magnets might not be so ancient. The Chinese may have used lodestone, a natural magnet which has been used for quite a while. In fact, ancient mariners are said to have used lodestones to help them navigate.
Observation: When we did the task with multiple experiments, the one that involved magnetism was number 3. When we put the magnet next to the iron fillings, I noticed that the iron fillings were drawn to the magnet and stuck to it. (See picture below) I thin this happened because the magnet produced a magnetic field that drew the iron too it.
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Explanation: A magnet is a rock or a piece of metal that can pull different types of metal toward itself. Magnetism is a force like electricity and gravity. Magnetism works over a distance. This means that a magnet does not have to be touching an object to pull it. It is a non-contact force.
Electrostatic
Example: When you rub a piece of woolen fabric against an inflated balloon, and bring it towards someone's hair.
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Facts: Lightning is a powerful and dangerous example of static electricity.
As dangerous as lightning is, around 70% of people struck by lightning survive.
Observation: When we did the task with multiple experiments, I noticed that when we did number 2, which was rub a piece of fabric against a balloon, and bring it towards someones hair, the hair/water was attracted to the balloon.