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Question 1: Which was the first metal used by man?
Question 2: The energy we get from water is called
(a) nuclear energy
(b) solar energy
(c) hydro energy
(d) none of these
Question 3: The diesel engine was invented by
(a) Rudolf Diesel
(b) Gottlieb Daimler
(c) Alessandro Volta
(d) None of these
(a) Electricity produced by running water is called _________.
(b) Iron tools are stronger than those made of _________.
Question 5: Which metal was first used by man?
Question 6: What were man’s earliest tools? What were these made of?
Question 7: How can electricity be produced?
Question 8: Name at least two sources of energy.
Question 9: What is a machine?
Question 10: What products come out of petroleum?