Second 9 Weeks Quiz

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| By Sfiveash
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Sfiveash
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Quizzes Created: 1 | Total Attempts: 59
| Attempts: 59
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  • 1/16 Questions

    Light travels in ________________ __________________.

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This quiz will help you review so that you will do your best on your nine weeks test!

Second 9 Weeks Quiz - Quiz

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  • 2. 

    Name the colors of light in order.

    Explanation
    The colors of light in order are red, orange, yellow, green, blue, indigo, and violet. This sequence is commonly referred to as the rainbow colors or the colors of the visible spectrum.

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  • 3. 

    The three basic colors of light are

    • Pink, purple, yellow

    • Red, blue, green

    • Yellow, orange, green

    • Blue, green, white

    Correct Answer
    A. Red, blue, green
    Explanation
    The three basic colors of light are red, blue, and green. These colors are known as the primary colors of light because they cannot be created by mixing other colors of light. When combined in different intensities, these three colors can create all other colors in the visible spectrum. This concept is used in various applications such as televisions, computer screens, and color printing, where different combinations of red, blue, and green light are used to produce a wide range of colors.

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  • 4. 

    What is the fixed point on a lever called?

    • Motor

    • Pulley

    • Axle

    • Fulcrum

    Correct Answer
    A. Fulcrum
    Explanation
    The fixed point on a lever is called the fulcrum. The fulcrum is the point around which the lever rotates or pivots. It acts as a support or a fixed point of reference for the lever to balance and exert force. Without a fulcrum, the lever would not be able to function properly.

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  • 5. 

    There are _______ simple machines.

    Correct Answer
    six
    Explanation
    The question asks for the number of simple machines, and the correct answer is six. This implies that there are six basic types of simple machines, which are the lever, pulley, wheel and axle, inclined plane, wedge, and screw. Each of these machines has a different purpose and mechanism, but they all fall under the category of simple machines.

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  • 6. 

    Friction makes work __________________.

    Correct Answer
    harder
    Explanation
    Friction is a force that opposes motion between two surfaces in contact. When there is friction, it requires more effort to overcome this resistance and perform work. Therefore, friction makes work harder to accomplish.

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  • 7. 

    Which is NOT a simple machine?

    • Wheel and axle

    • Pulley

    • Hammer

    • Lever

    Correct Answer
    A. Hammer
    Explanation
    A hammer is not considered a simple machine because it does not have a mechanical advantage or use energy to do work. Simple machines, such as the wheel and axle, pulley, and lever, are devices that make work easier by either multiplying or changing the direction of the applied force. However, a hammer is a tool that uses a person's force directly to apply an impact or force on an object, without any mechanical advantage involved.

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  • 8. 

    A ___________ is a push or a pull.

    • Force

    • Shove

    • Motion

    • Look

    Correct Answer
    A. Force
    Explanation
    A force is a push or a pull that can cause an object to move, change direction, or stop. It is a physical interaction between two objects or between an object and its environment. Forces can be exerted by living beings or by inanimate objects. In this context, force is the only option that accurately represents a push or a pull, making it the correct answer.

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  • 9. 

    On the moon, would you weigh less or more than on Earth?

    • Less, because there is less gravity

    • More, because there is more gravity

    Correct Answer
    A. Less, because there is less gravity
    Explanation
    On the moon, you would weigh less than on Earth because there is less gravity. Gravity is what pulls objects towards the center of a planet or moon, and the moon has less mass than Earth, resulting in weaker gravitational force. Therefore, your weight would be reduced on the moon compared to Earth.

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  • 10. 

    Which of these has the most friction?

    • Glass

    • Hardwood floors

    • Tile floors

    • Sand

    Correct Answer
    A. Sand
    Explanation
    Sand has the most friction compared to the other options listed. This is because sand particles are rough and irregular in shape, which increases the surface area in contact with other objects. As a result, when objects slide or move across sand, there is more resistance due to the increased friction between the surfaces. In contrast, glass, hardwood floors, and tile floors have smoother surfaces, resulting in less friction compared to sand.

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  • 11. 

    What is the unit of force?

    • Pascals

    • Weight

    • Newtons

    • Forces

    Correct Answer
    A. Newtons
    Explanation
    The unit of force is Newtons because Newton is the standard unit of force in the International System of Units (SI). It is named after Sir Isaac Newton and is defined as the amount of force required to accelerate a mass of one kilogram by one meter per second squared. Pascals is the unit of pressure, weight is the force exerted by gravity on an object, and Forces is not a specific unit of measurement.

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  • 12. 

    The six objects that help us in our everyday lives by changing the size and direction of the force are called _________________ ___________________.

    • Simple items

    • Simple machines

    • Compound items

    • Compound machines

    Correct Answer
    A. Simple machines
    Explanation
    Simple machines are objects that help us in our everyday lives by changing the size and direction of the force. They make work easier by allowing us to apply less force over a greater distance. Examples of simple machines include levers, pulleys, inclined planes, and screws. These machines are called "simple" because they are made up of only one or two basic parts and do not have complex mechanisms. They are essential tools that we use to perform various tasks efficiently.

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  • 13. 

    There are two different types of pulleys. The two types of pulleys are

    • Fixed;not fixed

    • Moving; not moving

    • Fixed; movable

    • Simple; compound

    Correct Answer
    A. Fixed; movable
    Explanation
    The correct answer is fixed; movable. This is because there are indeed two different types of pulleys: fixed pulleys, which are attached to a stationary object and do not move, and movable pulleys, which are attached to the load being lifted and move along with it.

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  • 14. 

    Speeding up, slowing down, turning, starting, and stopping are all examples of what?

    • Force

    • Turns

    • Acceleration

    • Ways to go

    Correct Answer
    A. Acceleration
    Explanation
    Acceleration is the correct answer because it refers to the rate at which an object changes its velocity. Speeding up, slowing down, turning, starting, and stopping all involve changes in velocity, which is why they are examples of acceleration. Force, turns, and ways to go do not accurately describe the concept of changing velocity.

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  • 15. 

    An example of transparent would be a

    • Heavy wood door

    • Banana

    • Glass window

    • Bookshelf

    Correct Answer
    A. Glass window
    Explanation
    A glass window is an example of transparency because it allows light to pass through it and enables us to see what is on the other side. Unlike a heavy wood door or a bookshelf, which are opaque and block our view, a glass window is clear and transparent, allowing us to see through it. Similarly, a banana is not transparent as it is a solid object and cannot be seen through.

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  • 16. 

    What is the bending of light called?

    • Reflection

    • Absorption

    • Refraction

    • Image

    Correct Answer
    A. Refraction
    Explanation
    Refraction is the bending of light as it passes from one medium to another with a different density. This phenomenon occurs because the speed of light changes when it travels through different substances. When light enters a medium at an angle, it changes direction, causing the light to bend. This bending of light is known as refraction.

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  • Current Version
  • Jun 18, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Dec 07, 2009
    Quiz Created by
    Sfiveash
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