Gravity and the effects it has on objects

Gravity is an extremely strong force. There are ways that the effect of that force can temporarily be reduced. Jets and prop-planes do make it into the atmosphere. Bubbles, seeds, pollen, dust and people can float for short periods

of time. 

Science - 3rd GradeStandard 4 Objective 2Describe the effects of gravity on the motion of an object.

GravitySir Isaac Newton discovered the Universal Law of Gravitation when he watched an apple fall from a tree. He discovered that the apple fell because the earth's gravity pulled the apple down from the tree.

Gravity is the force that holds us to the earth.

GravityBy Londis Carpenter

If gravity were turned aroundWe’d all fall up instead of down.If I fell up I’d laugh out loudTo bump my head into a cloud.There’d be no skin on elbows or knees,Picking up clothes or raking leaves. And planes would need more sky to shareFor cars would soar into the air.I probably would never cryIf I slipped and fell up in the sky.But how would we stay on the groundIf gravity was turned around?

Video

Best Idea Ever• http://www.youtube.com/watch?v=_-

gdzOxe7aEIssac Newton’s Discovery of Gravitation• http://

www.youtube.com/watch?v=rSsVkLArPxQ&feature=related

Gravity Demonstration

• http://www.youtube.com/watch?v=hZi8TXtRRYg

Tissue ParachuteSupplies Needed

Tissue Paper

String

Clear Tape

Small FanMini Chocolate Bars 3X5 Card

Instructional Procedures

1. Tape a piece of string to each corner of two parachutes.

2. Gather all four of the strings on each parachute and tape, along with a candy bar, all four ends together.

3. The piece of tissue paper can be folded into quarters, so that a peak at the center of the tissue paper can be held for release.

4. The parachutes can also be folded into quarters again and tossed into the air.

Questions to be answered on 3X5 card

1. Which parachute will come/came down first? Why?

2. What happens when the force of wind (fan) is added to the activity?

3. Does it change what happens to the parachutes? Why?

Now you know….

all about gravity. Here are some experiments you can do at home with friends or family.

• Fly a kite• Playing ball

• Dropping objects (ex. feather)• Ride a roller coaster

References

• http://www.uen.org/Lessonplan/preview.cgi?LPid=21633

• http://www.google.com/imgres?q=isaac+newton&hl=en&sa=X&biw=1280&bih=899&tbm=isch&prmd=imvnsob&tbnid=d-9X-wWjY7NHBM:&imgrefurl=http://csmh.pbworks.com/w/page/7309510/1687%2520-%2520Sir%2520Isaac%2520Newton&docid=WXrk8R86qYgKOM&imgurl=http://csmh.pbworks.com/f/1188431334/Isaac%252520Newton%252520apple.JPG&w=768&h=630&ei=-yi8Tou3EeHfiALkp5TZAQ&zoom=1&iact=hc&vpx=364&vpy=599&dur=63&hovh=203&hovw=248&tx=156&ty=121&sig=107296418151714655975&page=1&tbnh=143&tbnw=174&start=0&ndsp=27&ved=1t:429,r:22,s:0