Examples of simple science discoveries shared by kids.

📚 Quick Study Guide

• 🍎 Gravity Observation: Isaac Newton, as a child, supposedly observed an apple falling from a tree, leading him to ponder the concept of gravity. Gravity is the force that attracts objects with mass towards each other. The formula for gravitational force is $F = G \frac{m_1m_2}{r^2}$, where $F$ is the force, $G$ is the gravitational constant, $m_1$ and $m_2$ are the masses of the two objects, and $r$ is the distance between their centers.
• 🌱 Plant Growth and Sunlight: Many kids discover that plants grow towards sunlight. This phenomenon is called phototropism. Plants need sunlight for photosynthesis, the process by which they convert light energy into chemical energy in the form of sugars.
• 💧 Water Cycle: Observing rain, puddles drying up, and dew forming helps kids understand the water cycle. The water cycle involves evaporation, condensation, and precipitation.
• 🌈 Rainbow Formation: Kids often notice rainbows after it rains. Rainbows are formed when sunlight is refracted and reflected by water droplets in the air.
• 🧲 Magnetism: Playing with magnets helps children understand that certain materials attract each other. Magnetism is a force caused by the motion of electric charges.

Practice Quiz

1. Which scientist's observation of a falling apple is a famous example of a simple science discovery?
   1. A. Albert Einstein
   2. B. Isaac Newton
   3. C. Marie Curie
   4. D. Galileo Galilei
2. What is the force that attracts objects with mass towards each other called?
   1. A. Electromagnetism
   2. B. Gravity
   3. C. Friction
   4. D. Buoyancy
3. What is the process called when plants grow towards sunlight?
   1. A. Photosynthesis
   2. B. Geotropism
   3. C. Phototropism
   4. D. Hydrotropism
4. Which 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. Sublimation
5. What creates a rainbow?
   1. A. The moon reflecting sunlight
   2. B. Dust particles in the air
   3. C. Sunlight refracted and reflected by water droplets
   4. D. The Earth's magnetic field
6. Which force is caused by the motion of electric charges?
   1. A. Gravity
   2. B. Magnetism
   3. C. Friction
   4. D. Buoyancy
7. Which of the following is NOT a key process in the water cycle?
   1. A. Evaporation
   2. B. Condensation
   3. C. Precipitation
   4. D. Combustion