Substrand · Force and Energy · Integrated Science · Grade 7
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**STATIC ELECTRICITY** - Static electricity is the accumulation of electric charges on an object's surface. - It can occur when two materials are rubbed together. - Rubbing causes electrons to move from one material to another. - An object that gains…
**TYPES OF CHARGES** **There are two types of electric charges:** - Positive charge: Occurs when an object loses electrons. - Negative charge: Occurs when an object gains electrons. - Neutral object: Has equal positive and negative charges, giving it no…
**EFFECTS OF FORCE BETWEEN CHARGED OBJECTS** - Rubbing two balloons against hair or wool gives them similar electric charges. - When brought close together, the balloons repel each other. - Like charges repel each other. - As the charges gradually disappear,…
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