II: TRUE or FALSE.
______21. In convection current, warm air rises ,cold air sinks.
______22. Unlike charges repel, like charges attract.
______23. Conduction and convection need vacuum for heat to transfer.
______24. An object becomes charged when it gains protons.
______25. When an object loses electrons, it becomes positively charged.
______21. In convection current, warm air rises ,cold air sinks.
______22. Unlike charges repel, like charges attract.
______23. Conduction and convection need vacuum for heat to transfer.
______24. An object becomes charged when it gains protons.
______25. When an object loses electrons, it becomes positively charged.
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Answer:
true
Explanation:
is really and I prove it
Answer:
1.true
2.true
3.true
4.false
5.false
Explanation:
Correct me if I'm wrong