5th Grade: Forces
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| a push or a pull that causes an object to move, stop or chagne direction | force
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| force that pulls all objects in the universe toward each other | gravitation
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| forces going in the oppoite direction and one force is greater than the other | unbalanced force
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| forces equal in size and opposite in direction | balanced force
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| force that goes against motion when two surfaces rub together | friction
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| force of pushing or pulling between magnetic poles | magnetism
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| What are the three main forces we studied? | gravitation, friction, magnetism
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| special type of gravitation that pulls things towards the earth. | gravity
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| Will two north ends of a magnet attract or repel? | repel
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| Will two south ends of a magnet attract or repel? | repel
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| Will a north and south ends of a magnet attract or repel? | attract
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| Forces always act in ________. | pairs
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| Is the gravitational force bigger or smaller when objects are farther apart | smaller
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| If an object is extremely large, like the sun, it the gravitational force bigger or smaller? | bigger
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| T/F? Gravity pulls people to the earth and earth towards the people | True
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| If a moving object stops, then the forces must be ___________ | unbalanced
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| If a moving object keeps moving at the same speed and same direction, the forces must be | balanced
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| If a stopped object starts moving, the forces must be | unbalanced
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| If an object isn't moving, the forces must be | balanced
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| What is the net force of a tug of war game if one side pulls with 50 newton and the other side pulls with 20 newton? | 30 newtons
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| force that causes a material to twist | torsion
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| stretching force that pulls on a material | tension
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| pressing force that squeezes a material together | compression
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| the permanent parts of structure that cannot be removed | dead load
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| the movable and removable parts of a structure | live load
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| Is a penny an example of a live or dead load | live load
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| Is a floor an example of a live or dead load | dead load
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| Is a ceiling fan an example of a live or dead load | dead load
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| Is a person an example of a live or dead load | live load
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| Wind, rain, earthquakes, and sunshine are all examples of what kind of special load | environmental live load
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| What type of bridges use strong cables to help support the dead and live loads of the bridge | suspension bridges
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| type of force that occurs when two objects touch | direct force
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| type of force that occurs even though the objects do not touch | indirect force
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| Is magnetism a direct or indirect force | both
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| Is gravitation a direct or indirect force | indirect
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| Is friction a direct or indirect force | direct
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| If all the atoms are lined up in a substance, then that substance is probably a | magnet
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| Will a magnet lose its magnetic force if it is drop very very hard? | yes
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| What two things affect gravitation? | mass and distance
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| Will a magnet lose its magnetic force if it is broken in half? | no
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