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hydrosphere, nitrogen cycle and force and fricti ...

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  • force that stretches materials
    tension
  • How many percent of our atmosphere is nitrogen?
    78%
  • How can we save water?
    1. Take a shower not a bath 2. Turn off taps when brushing teeth or soaping body 3. Load dishwashers and washing machines completely before use.
  • How many liters of water does a human body loses in a day?
    1.5 to 2 liters
  • name the special properties of sea water
    1. it is salty 2. contains dissolved gases 3. temperature of salt water varies with depth
  • What is the most abundant gas in the atmosphere?
    Nitrogen
  • ____________ is liquid water changing to gas
    evaporation
  • Name the three main properties of water
    1. a powerful solvent 2. absorbs heat 3. cohesion and adhesion
  • _______________________- is water taht i located beneath the ground surface
    groundwater
  • name the three main uses of water
    agriculture, industry, domestic use
  • name the 5 process of nitrogen cycle (IN CORRECT ORDER)
    FIXATION, NITRIFICATION, ASSIMILATION, AMMONIFICATION, DENITRIFICATION
  • How many percent of Earth's water is salt water?
    97%
  • Name the three ways ocean water moves.
    1. waves 2. ocean currents 3. tides
  • Another name for water cycle?
    hydrologic cycle
  • _______________ is when surface water moves across the land forms rivers and streams
    surface runoff
  • push or pull
    force
  • __________________ are accumulation of snow on mountatin tops
    glaciers
  • How many liters of water does our body lose everyday?
    1.5 - 2 liters
  • Complete the sentence: ______________ contains much less salt than sea water
    freshwater
  • What pollutes water?
    waste water from industries and farmlands, 2. sewage water 3. oil slicks 4. agricultutal fertilizers and pesticides
  • How do we lose water in our body?
    by sweat, urine and respiration
  • what is meant by anomalous dilation?
    when water freezes, it dilates or increases in volume
  • ______________ is when water vapor changes into liquid, forming clouds and dew
    condensation
  • _________________ is when surface water filters into the ground
    infiltration
  • force that squashes materials
    compression
  • ____________ are water courses fed by rain
    streams or torrents
  • Plants absorb nitrates from the soil into their roots. Then the nitrogen gets used in amino acids, nucleic acids, and chlorophyll.
    assimilation
  • TRUE or FALSE. Nitrogen can be readily absorbed by plants and animals.
    false