Everyday Examples of Science Around Us: Grade 6 Discoveries

📚 Quick Study Guide

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• Earth's Rotation and Day/Night: The Earth rotates on its axis, causing day and night. One full rotation takes approximately 24 hours.
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• The Water Cycle: Evaporation (liquid to gas), condensation (gas to liquid), and precipitation (rain, snow, etc.) are the main stages.
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• Gravity: Gravity is a force that pulls objects towards each other. The more massive an object, the stronger its gravitational pull.
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• Simple Machines: Levers, pulleys, and inclined planes make work easier by changing the amount of force needed or the distance over which the force is applied.
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• Heat Transfer: Heat moves from hotter objects to cooler objects through conduction, convection, and radiation.
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• Photosynthesis: Plants use sunlight, water, and carbon dioxide to create their own food (sugar) and release oxygen. The equation is: $6CO_2 + 6H_2O + \text{light} \rightarrow C_6H_{12}O_6 + 6O_2$
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• Magnetism: Magnets have north and south poles. Opposite poles attract, and like poles repel.

🧪 Practice Quiz

1. Which of the following everyday events is a direct result of Earth's rotation?
   1. A) The changing of the seasons
   2. B) Day and night
   3. C) Lunar eclipses
   4. D) Solar eclipses
2. What part of the water cycle involves water changing from a liquid to a gas?
   1. A) Condensation
   2. B) Precipitation
   3. C) Evaporation
   4. D) Collection
3. Why does a ball eventually fall to the ground when you throw it up in the air?
   1. A) Air resistance
   2. B) Magnetism
   3. C) Gravity
   4. D) Inertia
4. Which simple machine is used in a seesaw?
   1. A) Inclined plane
   2. B) Lever
   3. C) Pulley
   4. D) Wheel and axle
5. If you touch a metal spoon that is sitting in a hot bowl of soup, the spoon will get hot. What type of heat transfer is this?
   1. A) Convection
   2. B) Radiation
   3. C) Conduction
   4. D) Insulation
6. What do plants release into the air during photosynthesis?
   1. A) Carbon dioxide
   2. B) Nitrogen
   3. C) Oxygen
   4. D) Hydrogen
7. What happens when you bring the north poles of two magnets close to each other?
   1. A) They attract
   2. B) They repel
   3. C) They do nothing
   4. D) They become demagnetized