Science

• What are the two most abundant gases in Earth's atmosphere?

  Nitrogen (78%) and Oxygen (21%)
• What is the carbon cycle?

  The continuous movement of carbon between atmosphere, plants, animals, soil, and oceans through processes like photosynthesis, respiration, decomposition, and combustion
• Name the three main stages of the water cycle

  Evaporation, Condensation, Precipitation
• What is global warming?

  The long-term heating of Earth's climate system due to human activities, primarily fossil fuel burning, which increases greenhouse gas levels in the atmosphere
• What causes acid rain?

  Sulfur dioxide and nitrogen oxides released into the atmosphere, mainly from industrial emissions, which combine with water to form acidic precipitation
• What are the 3 R's of waste management?

  Reduce, Reuse, Recycle
• Name the three main states of water in the water cycle

  Liquid (water), Gas (water vapor), and Solid (ice)
• What is the main cause of global warming?

  Increased greenhouse gas emissions (especially CO2) from human activities like burning fossil fuels
• What causes acid rain?

  Sulfur dioxide and nitrogen oxides released into the atmosphere, mainly from industrial emissions and vehicle exhaust
• What are the 3 R's of waste management?

  **Reduce**, **Reuse**, **Recycle**
• Ceramic

  A type of material created by heating clay or other organic materials at high temperatures, known for its thermal resistance, non-conductivity, and chemical resistance.
• A type of material created by heating clay or other organic materials at high temperatures

  A ceramic is created by heating clay or other organic materials at high temperatures to the point of vitrification, making it hard, non-porous, and durable.
• Ceramic chemical properties

  Ceramics are resistant to corrosion and chemical reactions, making them suitable for use in harsh environments. They are also non-reactive and can withstand exposure to various chemicals.
• Ceramic physical properties

  Ceramics are hard and resistant to scratching and wear. They can also withstand high temperatures and are poor conductors of heat and electricity, making them useful in electronics and thermal insulation.
• Advantages of using ceramic

  Ceramics are durable, resistant to corrosion and chemical reactions, and can withstand high temperatures.
• Disadvantages of using ceramic

  Ceramics can be brittle and prone to cracking and breaking. They can also be porous, allowing gases and liquids to pass through. Additionally, they can be expensive to manufacture and susceptible to thermal shock.
• Examples of ceramic use

  Ceramics are used in various applications such as kitchenware, electronics, aerospace, and biomedical devices. They are also used in implantable devices, surgical instruments, and other medical equipment due to their biocompatibility and non-reactive properties.
• What are non-renewable energy resources?

  Energy sources that cannot be replenished
• What are renewable energy resources?

  Energy sources that can be replenished naturally
• What are energy stores?

  Methods of holding energy for later use
• What are energy transfers?

  Processes of moving energy from one place to another
• What is energy dissipation?

  Loss of energy in an unusable form
• What is the relationship between power and energy?

  Power is the rate at which energy is used
• What does paying for electricity involve?

  Costs associated with energy consumption
• What are different fuel and energy types?

  Various sources used for energy production
• How is food related to energy?

  Food provides energy for living organisms
• What is the significance of energy in our lives?

  • Essential for daily activities
  • Powers homes and industries
  • Supports transportation and communication
• What is the Big Picture of energy resources?

  • Energy is vital for everyone
  • Includes both renewable and non-renewable sources
  • Impacts environmental and economic factors