1) Simple machine a) b) c) d) 2) Complex machines a) b) c) d) 3) Complex machines a) b) c) d) 4) Simple machines a) b) c) d) 5) Complex machines a) b) c) d) 6) It needs electricity. a) b) c) d) 7) It needs electricity a) b) c) d) 8) It needs electricity. a) b) c) d) 9) What type of energy can you see? a) Human force b) Electricity c) Solar energy d) Fuel 10) What type of energy can you see? a) Human force b) Electricity c) Solar energy d) Fuel 11) What type of energy can you see? a) Human force b) Electricity c) Solar energy d) Fuel 12) What type of energy can you see? a) Human force b) Electricity c) Solar energy d) Fuel 13) What type of energy can you see? a) Human force b) Electricity c) Solar energy d) Fuel 14) What type of energy can you see? a) Human force b) Electricity c) Solar energy d) Fuel

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