Problem Analysis:
The worksheet is about static electricity and how rubbing objects together can cause a transfer of electric charges. Let's analyze the images and answer the questions step by step.
####
Image Description:
1.
Picture 1:
- The balloon has an equal number of positive (+) and negative (-) charges, indicating it is
neutral.
- The wool cloth also has an equal number of positive and negative charges, indicating it is
neutral.
2.
Picture 2:
- The balloon now has more negative (-) charges than positive (+) charges, indicating it has a
negative charge.
- The wool cloth now has more positive (+) charges than negative (-) charges, indicating it has a
positive charge.
Questions and Solutions:
####
Question 1:
> Look at picture 1. What kind of charge does the balloon have?
-
Analysis: In Picture 1, the balloon has an equal number of positive and negative charges. This means the balloon is
neutral.
-
Answer: Neutral charge
####
Question 2:
> Look at picture 1. What kind of charge does the cloth have?
-
Analysis: In Picture 1, the wool cloth also has an equal number of positive and negative charges. This means the cloth is
neutral.
-
Answer: Neutral charge
####
Question 3:
> Look at picture 2. What happened to the balloon after we rubbed it with a cloth?
-
Analysis: In Picture 2, the balloon now has more negative charges than positive charges, indicating it has acquired a
negative charge. This happens because rubbing the balloon with the wool cloth causes electrons (negative charges) to transfer from the cloth to the balloon.
-
Answer: The balloon now has a negative charge
Final Answers:
1. Neutral charge
2. Neutral charge
3. The balloon now has a negative charge
Boxed Final Answer:
\[
\boxed{\text{Neutral charge, Neutral charge, The balloon now has a negative charge}}
\]
Parent Tip: Review the logic above to help your child master the concept of static electricity worksheet.
