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4th grade Science Review

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  • What is the difference between a producer and a consumer?
    a producer makes its own food, a consumer eats the food made by the producer
  • Why are electrical cords covered in rubber?
    So you won't get electrocuted
  • What is the difference between mechanical and electrical energy?
    mechanical makes things move, and electrical energy charges things
  • Opposites _________, like sides __________ when it comes to magnets/electrical charges
    attract, repel
  • How do potential and kinetic energy make mechanical energy
    potential energy-sits there, kinetic- starts moving, mechanical is the motion caused by the potential and kinetic together.
  • What is the difference between a revolution and a rotation?
    revolution goes around the sun, rotation spins around itself
  • What happens to the lightbulb if a circuit is open?
    the electrons can't complete the circuit, the light won't turn on
  • What is static electricity?
    electricity that jumps from object to object
  • How can scientists tell the difference between two minerals that are the same color?
    the hardness
  • If the fossils of a fish are found in a desert ecosystem, what does that tell you about the environment?
    It used to be covered in water
  • What keeps the moon revolving about the Earth?
    gravity
  • When you put two magnets with the same end together, what do they do?
    repel each other
  • How long does Earth take to revolve around the sun?
    365 days or 1 year
  • What are the 4 benefits of exercise?
    strength, controls weight, happier, and more energy
  • What is the difference between attract and repel?
    attract comes together, repel pushes apart
  • What are the 4 benefits of exercise?
    strength, controls weight, happier, and more energy
  • what can people do to save water in times of drought?
    take shorter showers, plant crops that don't need much water, rain gardens
  • What are minerals?
    Minerals are naturally occurring elements that are solid and arranged in a certain way.
  • What does M.E.L.T.S. stand for
    the types of energy, mechanical, electrical, light, thermal, sound
  • What is the 5th planet from the sun?
    jupiter
  • What are the three parts in an electrical circuit?
    battery, wire, light bulb
  • Give me an example of artificial light?
    tanning beds, classroom lights, stop lights
  • How long is the lunar cycle?
    27-28 days (about a month)
  • What makes something "magnetic"?
    It must contain iron, copper or steel(cobalt)
  • How are bird's beaks shapes helpful to them?
    they can eat different things
  • What color object reflects all the colors of the rainbow?
    white
  • If two fossils are found in the same layer of rock, what does that mean?
    they lived in the same time period
  • What are 2 examples of conductors?
    copper, any metals
  • How do you test for streak?
    you scratch is on a streak plate or a piece of paper
  • Give me three examples of fast changes to the Earth's surface
    volcanoes, landslides, and Earthquakes
  • Give me three examples of slow changes to the earths surface
    weathering, erosion and deposition
  • How does igneous rock turn into sedimentary rock?
    WED
  • What are the effects of deforestation?
    less trees, taking animals habitats, less oxygen
  • What are the 4 benefits of exercise?
    strength, controls weight, happier, and more energy
  • How does metamorphic rock turn into igneous rock?
    melting
  • Give me an example of thermal energy in nature
    sun bathing animals, heat making things hot outside
  • Do magnets have to touch something to work?
    no
  • What kind of rock are fossils found in?
    sedimentary rock
  • If you rub a balloon on a wool sweater, what will happen if you try to stick it to the wall?
    it will stick to the wall because the balloon is positively charged and the wall is negatively charged
  • How is sound energy formed?
    vibrations
  • How does camoflauge help animals survive?
    They blend in, so they won't be seen, heard, or eaten
  • How can you protect your hand from a hot pan handle?
    its covered in rubber, and wear a pot holder
  • If it is day time here, what time of day is it on the other side of the world?
    night
  • What is an inherited or instinctive behavior?
    something animals are born knowing how to do?
  • How long does it take the earth to rotate once?
    24 hours
  • Weathering _______ it, Erosion ______ it, and Deposition _______ it.
    breaks, moves, drops
  • What are 2 differences between parallel and series circuits?
    series has one path, parallel has more than one. In series 1 goes out they all do, parallel not
  • What happens if you throw trash in a body of water (lake, ocean, pond)?
    The fish will eat it and get sick
  • What color object absorbs all the colors of the rainbow?
    black
  • How do body coverings help animals?
    keeps them warm and dry
  • How does sedimentary rock turn into metamorphic rock?
    heat/pressure
  • What is the order of the moon phases in the lunar cycle?
    new moon, waxing cresecent, first quarter, waxing gibbous, full moon, waning gibbous, last quarter, waning crescent
  • How does igneous rock turn into metamorphic rock?
    heating
  • Give me an example of static electricity?
    lightning, socks on carpet then touching metal.
  • How much of the moon can you see at once?
    half
  • What is the area around a magnet called that contains an invisible force?
    the magnetic field
  • What is density?
    How closely packed the particles of something are
  • what are the 6 types of nutrients you need to live and survive?
    carbs, protein, vitamins, fats, minerals and water
  • How can a person who doesn't eat well get the vitamins and minerals they need?
    diet supplements
  • what are fossils?
    strong parts of dead animals or plants buried along time ago
  • How do birds know when to migrate?
    they learn really young and the change of seasons
  • what is the scale that scientists use to measure the hardness of a mineral?
    Moh's hardness scale