Explanation:
Let’s go through each question step by step using the pictures described.
1.
Question 1: Look at Picture 1 — the balloon has *not* been rubbed with wool cloth. The balloon shows both + and – signs mixed together (3 + and 3 –), which means the charges are balanced. When an object has equal positive and negative charges, it is
neutral. So the balloon has a neutral charge.
2.
Question 2: In Picture 1, the wool cloth also shows a mix of + and – signs (4 + and 4 –), so it too is balanced — meaning it has a
neutral charge before rubbing.
3.
Question 3: Picture 2 shows what happens *after* rubbing. The balloon now has more
– signs than
+ signs (let’s count: 6 – and 2 + → net negative). The wool cloth has more
+ signs (6 + and 2 – → net positive). This happens because when you rub a balloon with wool, electrons move from the wool to the balloon. The balloon gains extra electrons → becomes negatively charged. The wool loses electrons → becomes positively charged. So the balloon now has a
negative charge.
Final Answer:
1. Neutral charge
2. Neutral charge
3. The balloon now has a negative charge
Parent Tip: Review the logic above to help your child master the concept of what is electricity worksheet answers.
