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8th grade Science End-of Year Assessment

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  • Air pressure moves from...
    High to low pressure
  • Which is a cause of mutations?
    exposure to UV light, x-rays, radiation, chemicals
  • Why is it warmer at the equator than at the poles?
    the sun is at an angle towards the pole
  • Why does sexual reproduction help survival?
    More variation increases adaptation
  • Physical properties can be observed without changing the substance.
    true
  • Will a plant placed in sunlight grow more or less than if it were placed in darkness?
    more
  • Which situation BEST shows natural selection?
    Individuals with helpful traits survive and reproduce
    Organisms choose traits
    All organisms survive equally
    Traits are chosen randomly
  • What type of environment would favor flowers that open at night?
    Presence of nocturnal or nighttime pollinators
  • The boundary between air masses is called a ...
    Front
  • Will an environmental factor such as drought affect plant growth?
    yes
  • Which is evidence of climate change?
    Long-term temperature trends
  • What is an advantage of sexual reproduction over asexual reproduction?
    Increases genetic diversity
  • Two or more atoms bonded together
    molecule
  • What will MOST likely happen over generations if different traits help organisms survive in different parts of an environment?
    Different populations will form based on traits
    All organisms become identical
    Traits disappear
    All organisms die
  • Why does low pressure often bring storms?
    warm air rises, cools, condenses and forms clouds
  • The periodic table is arranged by
    Atomic number
  • Sexual reproduction results in offspring that have
    Have genetic variation
  • Matter is anything that...
    Has mass and takes up space
  • What affects the flow of ocean currents and wind?
    shape of landforms
  • Order the liquids from most to least dense: 25 g/mL, 5 g/mL, 10 g/mL
    5 g/mL, 10 g/mL, 25 g/mL
  • What two things drive the water cycle?
    Sun’s energy and gravity
  • Where do you find the atomic mass of an element on the periodic table.
    Bottom number that is a decimal
  • Pollination between two different plants is what type of reproduction?
    Sexual
  • Why do denser liquids sink in a column?
    Greater mass per volume
  • Why does sunlight intensity vary on Earth?
    Angle of sunlight
  • A section of DNA that codes for a trait is called a
    Gene
  • Gravity’s role in the water cycle is to
    Pull water downward
  • Which food produces the MOST carbon emissions?
    Tomatoes
    Beef
    Rice
    Carrots
  • Why would a population split into two groups over time?
    Different traits are favored in different environments
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