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Constellations - Science A-Z
summer, people on Earth face one direction in space. On a winter night, they face the other As Earth orbits the Sun, the dipper direction. So, they see different constellations. From Earth, all the stars seem to surround Earth like a big ball. But some of the stars are closer to Earth, while others are much farther away.
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ENERGY Tuning Forks and Sound - Science A-Z
www.sciencea-z.comTuning Forks and Sound Purpose To observe the effect of sound on objects by using sight and touch Process Skills Observe, collect data, interpret data, draw conclusions Background Sound is a type of energy that allows us to hear. Sound is made when an object vibrates, or moves back and forth very quickly.
MACHINES Strength of Electromagnets
www.sciencea-z.comdifferent electromagnets can pick up. You will change two variables to make different electromagnets: the number of wire coils around the nail (10 or 20) and the number of D cell batteries (1 or 2). With your group, discuss what you think will happen. For each variable, predict which electromagnet will pick up more staples and why.
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