Electricity & Magnets- 8th grade

Boost 8th graders' understanding of electricity and magnetism! This worksheet covers static charges, circuits, and electromagnets.

Static Electricty Watch the video on static electricity to answer the questions below. Using the video above, complete the paragraph with the appropriate terms from the drop down menu. All matter is made up of atoms. There are three parts: negatively charged electrons, positively charged protons and neutral neutrons. Most material is neutrally charged, but rubbing can cause the electrons migrate (or move) between surfaces. This causes a shift in charges. Items that have lost electrons become positively charged while those that gained electrons become negatively charged. This is called charge imbalance. When imbalanced materials come into contact with each other, the electrons will jump to restore neutral charge equilibrium. This sudden shock is known as static electricty. Lightning is one of the scariest forms of static electricity. Static Electricty Charges Use the image to complete the matching below. Balloon Picture 1 charge Neutral Balloon Picture 2 charge Negative Cloth Picture 2 charge Positive Electrical Circuits Fill in the different parts of an electrical circuit: load, power source, wire, switch. switch wire load power source Sort the items depending on if they are a conductor or an insulator. Conductor copper gold silver Insulator rubber glass ceramic Look at the diagram above. Will the load be on or off? On off Light It Up Look at the circuits below. The X represents a break in the circuit. Determine how the circuit will work based on the break. Write ON or OFF by each bulb. Off Off On Off On On Off off off off on on Off On Electromagnet Label the parts of the electromagnet with the following terms: solenoid, power source, ferromagnetic material. (pay attention to spelling) power source ferromagnetic material solenoid Electromagnet Characteristics Sort the information about electromagnets under the correct heading. Increases Strength of an Electromagnet Wrap more coils Put coils closer together Change ferromagnetic material Increase current Make coils neater Decreases Effect on the Strength of an Electromagnet Overlap coils Wrap coils around a plastic rod Spread coils out Change the color of the wire Change the item you are picking up Magnetism Write either "attract" or "repel" by each image. (watch your spelling) repel attract attract Which image shows two magnets repelling?