Scientific Thinking Test 4b

15 Questions | Total Attempts: 40

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Scientific Thinking Test 4b

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Questions and Answers
  • 1. 
    Sana’a buys a ring made of gold and silver. After few weeks, the silver part of      the ring looks black and dull. The gold part stays shiny, the problem is:  
    • A. 

      Why is the ring shiny?

    • B. 

      What changes happened to the gold and the silver parts?

    • C. 

      What changes happened to the silver part?

  • 2. 
    Leen puts some ice cubes in a glass of water. She leaves her glass on the table.      When she returns, the ice is gone. The problem is:
    • A. 

      How did the ice change into water?

    • B. 

      What happened to the water?

    • C. 

      Who removed the ice from the cup?

  • 3. 
    Omar used a graduated cylinder to measure 40 ml of water, then after      freezing the water over night the volume of the water raised to 44 ml. the      problem is: 
    • A. 

      How does freezing affect the volume of water?

    • B. 

      How does freezing affect the mass of water?

    • C. 

      How does freezing affect the color of water?

  • 4. 
    - Ahmad uses a balance to measure the mass of an apple. He then cut up the       apple into four pieces of varying sizes. He wanted to know if the size of the      apple affects its mass or not? His hypothesis is:    
    • A. 

      If the shape of the apple pieces changes, then its total mass will change.

    • B. 

      If the size of the apple pieces changes, then its total mass will be the same.

    • C. 

      If the color of the apple pieces changes, then its total mass will change.

  • 5. 
    - In the science lab Farah was measuring the melting point and the boiling      point of water, she organized her results in the following line graph that     shows the relation between the temperature and the time. She needs to set her          experiment and test when does ice(A) change to liquid water (B), her      hypothesis will be: 
    • A. 

      If  the temperature increases, then ice will change to liquid water                           

    • B. 

      If  the temperature decreases, then ice will change to liquid water  

    • C. 

      If  the temperature increases, then liquid water will change to ice

  • 6. 
    In parallel circuit, electricity has more than one path to flow. Electrical     current can flow in different paths as they flow from the negative side of the     battery to the positive side. You wanted to know if a broken or a missing     light bulb affects the other light bulb or not. Your hypothesis will be:
    • A. 

       If a light bulb is missing or broken,  then the other light bulb will light. 

    • B. 

       If a light bulb is missing or broken,  then the other light bulb will not light.

    • C. 

       If a light bulb is missing or broken,  then the other light bulb will get dimmer. 

  • 7. 
    - A scientist wants to build a series circuit using a small battery and a small      light bulb, he runs out of wire. What everyday object could he use to connect     the battery to the light bulb?          
    • A. 

      Use a metallic spoon

    • B. 

      Use a plastic ruler

    • C. 

      Use a rubber eraser

  • 8. 
    If you find a metal bar, how can you determine if it is a magnet or not?   
    • A. 

      Pour water over it and see the reaction

    • B. 

      Put something made of iron near it and see the reaction

    • C. 

      Heat the bar and see the reaction  

  • 9. 
    Zaid wanted to differentiate between the chemical and the physical change,       Study the experiment below, How can you tell Zaid if a change has occurred? 
    • A. 

      Mix vinegar and baking soda

    • B. 

      Mix vinegar and water.

    • C. 

      Mix water and baking soda.

  • 10. 
    Muna washes dishes and put the clean wet dishes on a drying rack. Water in       these dishes dries up because: 
    • A. 

      The water melts. 

    • B. 

      The water condenses.

    • C. 

      The water evaporates

  • 11. 
    An astronaut weighs on Earth 180 pound, while on the moon he weighs about     30 pound. This is due to:
    • A. 

      The mass of the astronaut on the moon is less than his mass on Earth.

    • B. 

      The gravity on the moon is more than the gravity on Earth.

    • C. 

      The gravity on the moon is less than the gravity on Earth.

  • 12. 
    Use the graph below to find the relation between the power of theelectromagnet and the number of coils:
    • A. 

      The strength of the electromagnet is not affected by the number of coils.

    • B. 

      The strength of the electromagnet increases when the number of coils decreases.

    • C. 

      The strength of the electromagnet increases when the number of coils increases.

  • 13. 
    An electrician is a person who works on and repairs electrical equipment. He need to protects himself from an electric shock. So he used the following: 1-rubber gloves 2- special shoes with thick rubber soles 3- plastic tool.  Which all are:    
    • A. 

      Tools to keep himself clean.

    • B. 

      Conductors to connect the electricity.

    • C. 

      Insulators to keep him safe

  • 14. 
    Electricity and magnetism are closely related. They have a great role in our everyday lives than we might realize. Wind turbines generate electricity.  Water turbines generate electricity too. All generators transform:  
    • A. 

      Energy of motion into electrical energy.

    • B. 

      Electrical energy into light energy.

    • C. 

      Electrical energy into energy of motion.

  • 15. 
    Sami connected this circuit. He tried to add a or remove parts to make a brighter light. When he added more batteries, the circuit made a brighter light, but when he added less batteries he made a dim light, finally he generalized that: 
    • A. 

      Removing batteries makes brighter light.

    • B. 

      Adding more batteries makes brighter light.

    • C. 

      Adding more light bulbs makes brighter light. 

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