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Sci-5 Chapters 4-5

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  • Extra points! What is the difference between a series circuit and a parallel circuit?
    Checked
  • A __________ is used to open and close a circuit.
    switch
  • True or False? Light can travel around corners.
    False
  • Extra points! Why do wires in homes use parallel circuits instead of series circuits?
    Checked
  • Extra points! What are three sources of artificial light?
    Checked
  • True or False? A filament in a lightbulb glows when electric current passes through it.
    True
  • Extra points! How do periscopes use mirrors to help people see around obstacles?
    Checked
  • Which one is a natural source of light?
    Streetlight
    Flashlight
    Lightbulb
    Firefly
  • Extra points! Why do we cover wires with plastic?
    Checked
  • The bouncing of light from a surface is called __________.
    reflection
  • Extra points! Why does a shadow become larger when an object moves closer to a light source?
    Checked
  • Extra points! What are the four main components of a simple electric circuit?
    Checked
  • Extra points! Name two electrical conductors and two electrical insulators.
    Checked
  • Which material is transparent?
    Clear glass
    Aluminum foil
    Wood
    Frosted glass
  • Extra points! Why does an object have no shadow at midday on the equator during an equinox?
    Checked
  • Light travels at a speed of about __________ km per second.
    300,000
  • A material that does NOT allow electricity to pass through is called an __________.
    insulator
  • In a __________ circuit, if one bulb goes out, all the other bulbs stop working.
    series
  • Extra points! What happens when a switch in a circuit is turned off?
    Checked
  • True or False? A parallel circuit has more than one path for electricity to flow.
    True
  • Which of the following is NOT a part of a simple circuit?
    Battery
    Lightbulb
    Wire
    Water
  • Electrical appliances work when electricity flows through a __________.
    circuit
  • True or False? Plastic is a conductor of electricity.
    False
  • When an object moves closer to a light source, its shadow becomes __________.
    larger
  • True or False? An open circuit allows electricity to flow.
    False
  • Extra points! How does light travel, and why is it important for seeing objects?
    Checked
  • How does light travel?
    In a straight line
    In a wave
    In a circle
    In a zigzag
  • What is electricity?
    A form of energy
    A type of food
    A type of metal
    A liquid
  • True or False? The Sun is the primary source of natural light.
    True
  • True or False? Shadows are always the same size.
    False
  • What happens when light is blocked by an object?
    A shadow is formed
    Light disappears
    Light changes direction
    Nothing happens
  • A __________ reflects light.
    mirror
  • The flow of electric particles is called __________.
    electric current
  • True or False? A battery has a positive and negative terminal.
    True
  • Extra points! What is the difference between a transparent, translucent, and opaque object?
    Checked
  • A __________ is formed when an object blocks the path of light.
    shadow
  • What happens in a closed circuit?
    The electric current stops
    The electric current flows
    The wires melt
    The battery melt
  • Why do we use metals for wires?
    They are good conductors of electricity
    They are the only material available
    They don’t allow electricity to flow
  • Light is a form of __________.
    Solid
    Gas
    Liquid
    Energy
  • What is needed for an electrical appliance to work?
    Air
    An electric current
    Sound waves
    Water
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