A boy slides down a plastic slide from point P (at the top) to point Q (at the bottom).
State the main type of energy lost as the boy travels from P to Q.
As the boy slides down, he becomes electrostatically charged and his hair stands on end.
The passage below explains how the boy becomes charged. Complete the passage using words from the box. Each word may be used once, more than once, or not at all.
conductionelectronsfrictionnegativepositiveprotons \text{conduction} \quad \text{electrons} \quad \text{friction} \quad \text{negative} \quad \text{positive} \quad \text{protons} conductionelectronsfrictionnegativepositiveprotonsExplain why the boy's hair stands on end.
When the boy reaches the bottom, he touches a metal handrail and his hair falls back down. Explain why his hair falls back down.