Department of Mathematics and Science Static Electricity Essential Lab #6 Mary Tweedy, Curriculum...
-
Upload
philip-addis -
Category
Documents
-
view
213 -
download
0
Transcript of Department of Mathematics and Science Static Electricity Essential Lab #6 Mary Tweedy, Curriculum...
Department of Mathematics and Science
Static Electricity Essential Lab #6
Mary Tweedy, Curriculum Support Specialist – ScienceKeisha Kidd, Curriculum Support Specialist – Science
Dr. Millard Lightburn, Instructional Supervisor
Department of Mathematics and Science
What Do You Know About Atoms?
• All matter is made up of tiny particles called atoms.• Atoms contain protons, electrons and neutrons.• Protons have a positive charge, electrons a negative
charge, and neutrons a neutral charge.• There are 115 different atoms.• All matter is made up of different combinations of
these atoms.
Department of Mathematics and Science
Atoms
Let’s Model the Parts of an Atom
• Need: 8 Volunteers (2 neutrons, 2 electrons, 2 protons, 1 nucleus, and 1 atom)
Here’s what to do:• Atom” person holds up the sign and stands near the outside of the
circles. • The “Nucleus” stands inside the circle and hold his/her sign up• The 2 “Protons” go inside the center of the circle. • The 2 “Neutrons” go inside the circle• One “Electron” stands on each of the outer circles• “Both Electrons” walk quickly around their orbit
All: Draw a diagram of the model we just made in your journal.
Department of Mathematics and Science
All matter is made up of tiny particles called atoms.
What are an atom’s 3 basic parts?
1. Neutrons2. Protons3. Electrons
What are their electrical charges?
a. Neutralb. Positivec. Negative
Department of Mathematics and Science
What do Atoms have to do with Static Electricity?
Check this out:
http://www.teachersdomain.org/asset/phy03_vid_zsnap/
Discovery Video: Static Electricity
Department of Mathematics and Science
Now it’s Your Turn to Explore
Essential Lab #6 Static ElectricityKey Question:
How does static electricity cause objects to attract or repel?
Rotate through the 4 stations, follow the directions, and record your data in the
chart.
Department of Mathematics and Science
Key Question: How does static electricity cause objects to attract or repel?
Explain/Evaluatea. How does what you observed at Station 1 provide evidence to answer your key question?
b. How does what you observed at Station 2 provide evidence to answer your key question?
c. How does what you observed at Station 3 provide evidence to answer your key question?
d. How does what you observed at Station 4 provide evidence to answer your key question?
Department of Mathematics and Science
Let’s Take Another LookThe protons’ positive charges and their electrons’ negative charges are typically electrically balanced in an atom.
Rubbing the balloon on one’s hair (friction) causes it to gain electrons and become negatively charged. This makes your hair stand on end by giving them all the same charge, making them repel one another.
- +- +- +- +
Department of Mathematics and Science
Try This: Discovery Exploration: Static Electricity
Rubbing the balloon on your hair, gives it a surplus of electrons. A wall will have an opposite charge, causing them to attract one another and allowing the balloon to stick to the wall.
Department of Mathematics and Science
What Do You Know Now?
• What is static electricity?• When does a static charge build up on an
object?• What happens when a static charge builds up
on an object?• What is an example from nature of static
electricity?
Department of Mathematics and Science
What is Static Electricity?
• Static electricity is a buildup of electrical charge in an object.
• Friction can cause a static charge buildup.• Static charge causes objects to attract or repel.• Static charge can be released as a brief burst of
electrical energy, sometimes visible as a spark, and felt as a shock.
Discovery Reading Passage: Don’t Move
Department of Mathematics and Science
When Does a Static Charge Build Up on an Object?
There are forces that can change an object’s electrical charge. One such force is friction. Friction is produced by rubbing two objects together. For example, when you walk across the floor, your shoes rub against the carpet. This creates friction. The friction causes electrons to flow from the carpet to your body. Both your body and the carpet become electrically charged.
Department of Mathematics and Science
What causes static electricity?
• http://www.ehow.com/video_4756347_what-causes-static-electricity.html
Department of Mathematics and Science
What Happens When a Static Charge Builds Up on an Object?
An electrically charged object can exert a force on other objects. A charged object will pull on uncharged objects and on objects that have an opposite charge. A charged object will push away another charged object that has the same charge. Static charge can also jump from a charged object to another object. The shock you might feel after rubbing your feet on the carpet is an example of this jump of electrical charge.
Department of Mathematics and Science
What Is an Example from Nature?
Lightning is the release of a very large static charge. Friction causes static electricity to build up in the clouds. Sometimes, electrons jump from cloud to cloud, releasing a very large static charge. The sky lights up, and we see a flash of lightning. Sometimes electrons jump from the cloud to the ground. This creates another flash of lightning.
Department of Mathematics and Science
RESOURCES• Study Jams - Atoms: Protons, Neutron and Electronshttp://studyjams.scholastic.com/studyjams/jams/science/matter/atoms.htm• http://www.teachersdomain.org/asset/phy03_vid_zsnap/• Bill Nye http://www.youtube.com/watch?v=Z-77IzaXGcg&safe=active• http://www.loc.gov/rr/scitech/mysteries/static.html• http://www.ehow.com/how-does_4564266_static-electricity-work.html• http://sciencespot.net/Media/atomsfam.pdf
(Atom’s Family)• Study Jams- Electricity: http://
studyjams.scholastic.com/studyjams/jams/science/energy-light-sound/electricity.htm
• www.Chem4kids.com