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# 3rd Grade Ch. 12 lesson 2 how does force affect motion

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### 3rd Grade Ch. 12 lesson 2 how does force affect motion

1. 1. CH. 12CH. 12 LESSON 2LESSON 2 HOW DOESHOW DOES FORCEFORCE AFFECTAFFECT MOTION?MOTION?
2. 2. Activity-Roll OnActivity-Roll On truck or cartruck or car DistanceDistance (cm)(cm) With rocksWith rocks Without rocksWithout rocks Hypothesis: I predict that the truck (car) will go further with or without rocks.
3. 3. forceforce any push or pullany push or pull can change an object’scan change an object’s position or direction ofposition or direction of motionmotion
4. 4. forceforce pushpush pullpull push pull
5. 5. The greater the forceThe greater the force on an object, theon an object, the greater will be itsgreater will be its change in its motion.change in its motion.
6. 6. frictionfriction contact force that goescontact force that goes against the motion of anagainst the motion of an objectobject
7. 7. Equal forces in oppositeEqual forces in opposite directions does not causedirections does not cause a change in motion.a change in motion. Tug of war
8. 8. gravitygravity Non-contact force thatNon-contact force that pullspulls objectsobjects toward each othertoward each other the greater the massthe greater the mass the greaterthe greater the force of gravitythe force of gravity
9. 9. weightweight amountamount of gravityof gravity thatthat pullspulls on anon an objectobject
10. 10. magnetismmagnetism non-contact force thatnon-contact force that pullspulls on metals withon metals with iron in themiron in them
11. 11. FORCEFORCE any push or pullany push or pull
12. 12. energyIt takesIt takes ________________ toto apply or exert aapply or exert a force.force.
13. 13. A force can causeA force can cause a _________ in ana _________ in an object’s position orobject’s position or motion.motion. changechange
14. 14. GRAVITYGRAVITY force thatforce that pullspulls objects towardobjects toward each othereach other
15. 15. FRICTIONFRICTION contact force that goescontact force that goes against the motion of anagainst the motion of an objectobject
16. 16. massmass the greater thethe greater the ______________ thethe greater the forcegreater the force of gravityof gravity
17. 17. IRONIRON Magnetism is a non-Magnetism is a non- contact force thatcontact force that pullspulls on metals withon metals with ___________ in them.___________ in them.