Chap Flashcards
Different types of waves
Pulling force Frictional force
Pushing force Weight force
Air resistance force Electrical force
Applied force Magnetic force
Gravitational force Normal force (reaction force)
Tension force
How do particles gain energy to move around?
From heat(kinetic energy)
How does diffusion happen?
When particles move from an area of high concentration to low concentration, they diffuse.
G force
Gravitational force
Transverse waves
Waves that travel in a swaying line
How does light move?
In longitudinal waves
What is the protective layer on the front of you eye?
The cornea
What goes right at the back of your eye?
The retina
What sends the images from the eye to the brain
The optical nerve
Contact force
A contact force is any force that requires contact to occur.Pushing a car up a hill or kicking a ball or pushing a desk across a room are some of the everyday examples where contact forces are at work.
Non-contact force
A non-contact force is a force which acts on an object without coming physically in contact with it. The most familiar example of a non-contact force is gravity, which confers weight. In contrast a contact force is a force applied to a body by another body that is in contact with it.
Force diagram
In physics and engineering, a free body diagram is a graphical illustration used to visualize the applied forces, movements, and resulting reactions on a body in a given condition. They depict a body or connected bodies with all the applied forces and moments, and reactions, which act on the body.
Interaction pairs
These two forces are called action and reaction forces and are the subject of Newton’s third law of motion. Formally stated, Newton’s third law is: For every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects.
Newtons
Newtons are a unit to help measure strength or tension.
Newton metre
A Newton metre is a utensil used to measure Newtons.
Deform
To make something miss happen or to make something go out of shape.
Compress
If you compress something you increase its density.
Reaction force
The opposing force lets say in gravity that keeps you from plummeting through the ground.
Extension
If you extend something you make it longer.
Elastic limit
If you stretch a rubber it’s elastic limit is when it stops stretching.
Hooke’s Law
Hooke’s law: force = spring constant × extension. This is when: force (F) is measured in newtons (N).
Balanced force
Balance forces are two forces acting in opposite directions on an object, and equal in size.
Unbalanced force
Balanced forces do not cause a change in motion. When balanced forces act on an object at rest, the object will not move. If you push against a wall, the wall pushes back with an equal but opposite force. Neither you nor the wall will move. Forces that cause a change in the motion of an object are unbalanced forces.
Weight
The weight of an object is it and the weight of it pushing into the ground.
Friction
When a material rubs against another it creates a friction.
Drag
Air resistance, or drag, is when a moving object slows down because of the density of the other medium.
Gravity
the force that attracts a body towards the centre of the earth, or towards any other physical body having mass.
Water resistance
The same concept as air resistance, except for with water.
Streamlined
If something is streamlined, it can avoid air resistance or water resistance by cutting through it.
3 effects of forces
The effects of forces are: change shape, to start moving, to stop moving, to accelerate or decelerate.
Tension
If something is tense, it has a force acting on it, making is straight and tight.
Normal force
It is another name for reaction force.
Thrust
Is an engine force pushing forwards or backwards.
Upthrust
You can get upthrust from normal force and water being blow you.
