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Light and Sound
häftad,
2016,
Engelska,
ISBN 9781410985361
'Light and Sound' explores two forms of energy that are all around us every day. You will learn how light and sound travel as waves. You will discover how these waves of energy …
Chemical Reactions
häftad,
2016,
Engelska,
ISBN 9781410985330
How does dough turn into bread? What kinds of reactions give off heat? What's the harm in burning fossil fuels? The visually stimulating 'Sci-Hi' books take learning science core …