how do forces affect motion adapted by diane gioia bell s crossing elementary
Download
Skip this Video
Download Presentation
How do forces affect motion? Adapted by Diane Gioia Bell’s Crossing Elementary

Loading in 2 Seconds...

play fullscreen
1 / 23

How do forces affect motion? Adapted by Diane Gioia Bell’s Crossing Elementary - PowerPoint PPT Presentation


  • 172 Views
  • Uploaded on

How do forces affect motion? Adapted by Diane Gioia Bell’s Crossing Elementary. Forces always work in pairs. One force pushes in one direction, and the other pushes with equal strength in the opposite direction.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'How do forces affect motion? Adapted by Diane Gioia Bell’s Crossing Elementary' - rhett


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide3
One force pushesin one direction, and the other pushes with equal strength in the opposite direction.
slide4
Walking demonstrates action and reaction becauseone foot pushes on the ground as the ground pushes the body forward.
slide6
Forces

A push or pull is called a force and forces make things move faster or slower, stop, change direction, or change size and shape.

slide7
Types of Forces

Magnetism

A force that acts at a distance and cannot be seen. The closer the objects, the greater the magnetic force.

The needle of a compass moves because of Earth’s magnetism.

magnetism
Magnetism

Materials that create this force are said to be magnetic and are called magnets.

The closer the objects, the greater the magnetic force.

slide9
Types of Forces

Friction:

The force that opposes motion between two surfaces that are touching.

slide10
Types of Forces

Friction

http://pals.sri.com/tasks/9-12/Fricforce/icongif/friction.GIF

slide11
Friction

The rougher the surfaces are, the harder they press together, the more friction there will be.

slide13
Friction
  • Occurs between liquids and gases as well as between solids.
  • Without friction you would not be able to slow or stop the motion of objects.
slide14
Loss of

Friction

http://www.school-for-champions.com/science/images/friction_uses-bear.jpg

slide15
Friction

Friction can be reduced by using lubricants, for example motor oil, wax, grease, by making surfaces smoother, or by using rollers.

lubrication
Lubrication

Lubrication, for example, oil or grease, reduces the effects of friction. Without lubrication, moving parts of machines would slow down or stop very quickly.

slide17
Types of Forces

How does gravity

affect motion?

slide18
Gravity

What do

you think it is?

slide19
Gravity is a force that

makes any object

attract, or pull toward,

another object.

slide22
Gravity
  • The attraction is not noticeable unless one of the objects is very large.

Earth is so big it

keeps everything

on the

ground.

slide23
http://svideo.greenville.k12.sc.us/videos/11883/chp898138_256k.asf
  • Introduction to forces and gravity 3:20
  • Some types of forces (for review)
  • Types of Force
ad