Trying bruh

• The Earth is 4.5 billion years old
• How scientists determined the age of the Earth


  1. Scientist hundred years to determine the age of the planet

  2. Scientist based the age of the planet to the rocks in the Earth

  3. Scientist based the age of the planet to the rocks in the Earth's neighbors such as the moon and meteorites
• Does the amount of salt water affect the temperature which it boils


  • Best considered a scientific method
• Observation


  The process of using your senses
• Scientific method


  The series of steps designed to solve problems and answer questions
• Analyzing data


  The step of the scientific method when we use graphs
• Communicating the results


  When a scientist shares his findings with other scientists
• "I usually solve my problem or answer a question what do I analyze the problem at hand and the solution to see if effective or not"
• Steps of the scientific method

  1. Make observations

  2. Come up with a question

  3. Develop a hypothesis

  4. Conduct an experiment

  5. Record and analyze the results

  6. Draw conclusions
• Scientific method


  • It is a step-by-step procedure to help solve problems and answer questions
  • It is like a roadmap to a destination
• Make observations


  Look around the possibilities for observations and questions are endless
• Develop a hypothesis


  An educated guess
• Conduct an experiment


  To test the hypothesis
• Record and analyze the results


  So you will be able to analyze the results
• Draw conclusions


  Summarize the findings of your experiment and to see if your hypothesis is accepted or rejected
• Technology and livelihood education or TLE consists of four different specializations: agriculture and fisheries, arts, home economics, and industrial arts
• For information and communications technology or ICT, you will learn computer system servicing, illustration, technical drafting, and animation
• Computer system servicing (CSS)


  Developing skills in installing and configuring a computer system, setting up computer networks and servers, and maintaining and repairing computer systems and networks
• The money you can earn from learning CSS may help you buy some of your personal needs
• Four core competencies in CSS

  • Install and configure computer systems
  • Set up computer networks
  • Set up computer servers
  • Maintain and repair computer systems and networks
• Personal protective equipment (PPE) in CSS


  Apron, anti-electrostatic mat, anti-static wrist strap, and safety goggles
• Harm or even death can befall us if we don't use proper PPE in CSS
• Electrostatic discharge (ESD)


  The buildup of an electrical charge on the surface of any object, which can pose a danger to a computer system
• Grounding


  Releasing the electrostatic discharge from our bodies by holding the non-painted metal part of the computer unit
• Anti-electrostatic mat


  Prevents static electricity from building up
• Anti-static wrist strap


  Protects the technician from ESD
• Selecting the proper hand tools for CSS

  1. Flathead screwdriver for negative screws

  2. Phillips screwdriver for positive screws

  3. Wire cutter for cutting wires

  4. Flashlight for inadequate lighting

  5. Soldering iron and solder for connecting wires

  6. Wire stripper for removing insulation from cables

  7. Crimping tool for connecting RJ45 and UTP cables
• Cable ties


  Used to make cables neat and organized
• Lint-free cloth or microfiber cloth


  Best cleaning tool for computers, as it can prevent ESD and does not build up a charge
• LAN tester


  Used for testing Ethernet cables for faults or missing pair connections
• Steps for testing a faulty LAN cable

  1. Attach both ends of the LAN cable to the RJ45 port of the LAN tester

  2. Switch on the LAN tester

  3. If all the lights are working as a pair, the LAN cable is still working

  4. If one light fails, try to re-crimp using the crimping tool

  5. If the problem still persists, try to replace the RJ45 one at a time
• Cutting tools belong to the hand tools category, not the ESD tools, hand tools, or diagnostic tools categories
• An anti-static wrist strap is the tool attached to the technician's arm that can prevent ESD damage to computer parts
• An anti-static mat is the specialized map where you can place your computer parts to prevent static electricity from building up
• A Phillips screwdriver is the tool needed to fasten or loosen cross-head screws
• A lint-free cloth is the best cleaning tool that can prevent ESD and not build up a charge