Science 21-50

• Ureters


  Tubes that carry urine from kidney to bladder
• Spleen


  Small organ that stores and filters blood
• Loam


  The best type of soil for growing plants
• System


  A group of organs that function together to do a specific job for the body
• Liver


  The largest internal organ of the body
• Products of photosynthesis

  • Water
  • Oxygen
  • Glucose
• Fuse


  A safety device to prevent fires when an electrical circuit is overheated
• Insulation


  The act of covering something to stop heat, sound, or electricity from escaping or entering
• Anode


  Positive terminal
• Cathode


  Negative terminal
• Mutualism


  Two organisms benefit from each other
• Homopetra


  Sucking insects
• Parasitism


  Relationship between two species of plants or animals in which one benefits at the expense of the other
• Compounds responsible for acid rain

  • Sulfur dioxide
  • Nitrogen oxide
• Physical weathering


  A process of wind, water and temperature changes causes rocks to break apart
• Protective coloration


  A blending of animals' color to its surroundings
• Violet


  Shortest wavelength
• Ultraviolet rays


  The electromagnetic waves that may produce skin cancer
• Many animals of the seashore do not move around. However, they always seem to have plenty of food because the tides bring food to them
• Short volt


  Occurs when electrons pass from one wire to another at the bare spots, bypassing a planned path and heating wires
• Anemometer


  Measuring wind speed
• Barometer


  Used to measure air pressure
• Hygrometer


  Measure the humidity of air
• Thermometer


  Measure the coldness and hotness of an object
• Axis


  Imaginary line running through the center of the earth
• Taiga


  The area that has the widest yearly temperature variations
• If the air is saturated, it is holding 100 percent of the moisture
• Scientific method


  An organized way of solving a problem
• Tornadoes


  Rapidly rotating winds that blow around a small area of intense low pressure
• Galileo


  The scientist who discovered that heavy and light bodies of the same substance fall at the same speed
• Kepler


  Discovered the three laws of planetary motion
• Pasteur


  Discovered that microorganisms cause fermentation and disease; originated the process of pasteurization
• Newton


  Discovered the three laws of motion and universal gravitation
• Nocturnal


  Animals which are active by night
• Proboscis


  Elongated appendage from the head of the animal
• Chrysalis


  A pupa of a butterfly, an insect pupa, the hardened outer protective layer of a pupa
• Spinneret


  A silk spinning organ of an insect or spider
• Instrument


  A scientific tool that is helpful in making observations
• Arachnids


  Have four pairs of legs