science

• Magnetic field


  Will exert a force on another magnetic field
• Magnetic field around a north pole


  Will repel another north pole
• Earth


  Is surrounded by a magnetic field
• Earth's core


  Acts like a magnet, causing the magnetic field
• Permanent magnet type


  • Magnet bar
• Part of the Earththat cause magnetic field

  • Core
• Red blood cells


  Function: Carry oxygen around the body
• White blood cells


  Function: Help to fight pathogens. Produce chemicals that kill and digest pathogens
• Components of blood, other than red and white blood cellsand it's function

  • Plasma. Bring nutrients to parts of the body that need it
• Aerobic respiration


  Glucose + Oxygen → Carbon dioxide + Water
• Other muscles that help air move into the lungs

  • Intercostal muscles
• Complete the equation for speed

  speed = distance / time
• Moment


  Force x distance
• Complete the equation for pressure

  pressure = force / area
• Ecosystem


  The interactions between all the organisms and their environment
• Habitat


  A place where an organism lives
• Introduced species often cause harm in their new environment, but do not cause harm in their native country
• Protons have a positive electric charge
• Electrons have a negative electric charge
• Neutrons have no electric charge
• Electrons have a smaller mass than protons and neutrons
• Weather


  The state of the atmosphere and the condition in a particular place (sunny, rainy, frosty)
• Climate


  The average weather in an area over several years
• Law of reflection


  The angle of reflection is equal to the angle of incidence
• Light passes from air into glass


  The speed of light slows down and bends towards the normal
• Dispersion


  Splitting white light into many colours
• Asteroids were formed from rocks left over from the formation of the Solar System
• Fat and oil is needed to give energy and make cell membranes
• Eating too much fatty food will make you gain weight and out a strain on your jointsjoints, heart and other organs
• Ball-and-Socket joints let bones move in a complete circle
• pair of muscles is needed to move bones because bones andand joints can't move themselves
• inert: unreactive
• exothermic: a reaction that gives out thermal energy
• pure: only 1 substance
• Copper: doesn't react with dilute acid
• Very reactive metal: Sodium
• Sodium is stored under oil to prevent them reacting with water vapour in the air
• Exothermic reaction is used in self heating food cans