physics

• Gravity: is one of the fundemental forces of nature, responsible for the attraction between objects with mass. The force of Gravity between two objects depends on their masses and the distance between them, following newton's law of universal gravitation. The universal force of attraction acting between all matter. Its the reason we stay grounded on Earth and why objects fall when dropped. The more mass an object has, the stronger the gravitational pull. The larger distance, the weaker the gravitational pull. The reason why planets orbit stars, and why galaxies hold together.
• Balanced forces


  When things stay still or move at the same speed
• Unbalanced forces

  When things speed up, slow down, or change direction
• Balanced forces


  • Two people pushing a box from opposite sides with the same amount of force, so the box doesn't move
• Balanced forces


  • Equal in size and opposite in direction, so they cancel each other out
• When forces are balanced


  Things stay still or keep moving at the same speed
• Unbalanced forces


  • One person pushes the box harder than the other, so the box starts to move in the direction of the stronger push
• Unbalanced forces


  • One force is stronger than the other
• When forces are unbalanced


  Things move in some way (speed up, slow down, or change direction)
• Friction


  The force that happens when two things rub against each other. It's what makes it harder to slide things across a surface.
• Feeling friction


  • Rubbing your hands together
  • Pushing a heavy box along the ground
• Friction


  • Caused by tiny bumps and rough spots on surfaces that stick together when they touch
  • The rougher the surface, the more friction there is
• Friction


  Useful for stopping cars and helping us walk without slipping
• Friction


  Can make machines wear out faster
• Reducing friction


  Using things like lubricants or smoother surfaces
• Water pressure refers to the force exerted by water on surfaces or objects submerged in it. It's the push that water applies against something in contact with it, like the walls of a container, the bottom of a swimming pool, or a submerged object. The pressure increases with depth because the weight of the water above adds to the force pressing down. This means that the deeper you go underwater, the greater the water pressure becomes. It's why you might feel your ears pop when you dive deep in a pool or go underwater.
• Air pressure is the force exerted by the weight of air molecules pressing down on surfaces on Earth's surface. It's like the weight of a big pile of air above us pushing down on everything below it. The higher you go up in the atmosphere, the less air there is above you, so the lower the air pressure. This is why it's harder to breathe at high altitudes like mountains, where the air pressure is lower. Air pressure changes with weather patterns, altitude, and temperature variations.
• Types of electricity production

  • Renewable Energy Production
  • Non-Renewable Energy Production
• Renewable Energy Production


  • Generated from sources that won't run out and don't harm the environment much
• Solar power

  Energy from the sun is captured using solar panels
• Wind power


  Energy from wind is harnessed by wind turbines
• Hydroelectric power


  Energy from flowing water, such as rivers or dams, is used to turn turbines
• Non-Renewable Energy Production

  • Electricity comes from sources that can run out and often cause pollution
• Non-renewable energy sources

  • Fossil fuels
  • Nuclear power
• Fossil fuels

  Fuels like coal, oil, and natural gas, which are burned to produce heat and electricity
• Nuclear power

  Energy is generated through nuclear reactions in power plants, which can be hazardous due to radioactive waste
• How We Produce Electricity:

  • Electricity is typically generated using generators, which convert mechanical energy into electrical energy.
  • Different methods are employed for energy production, including burning fossil fuels to produce steam to turn turbines, utilizing the kinetic energy of flowing water or wind, harnessing nuclear reactions, or capturing sunlight
• Kinetic Energy


  Energy that something has because it's moving
• Potential Energy


  Stored energy, waiting to be used
• Thermal Energy

  Heat energy, the energy of moving particles in a substance
• Chemical Energy


  Energy stored in the bonds between atoms and molecules
• Main types of energy

  • Kinetic Energy
  • Potential Energy
  • Thermal Energy
  • Chemical Energy
• There are others too, like electrical energy from batteries or nuclear energy from atoms splitting
• Energy conversion


  When energy changes from one form to another
• These changes in energy happen all around us, powering our actions and the world we live in