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5th Grade: Forces

Questionanswer
a push or a pull that causes an object to move, stop or chagne direction force
force that pulls all objects in the universe toward each other gravitation
forces going in the oppoite direction and one force is greater than the other (not on test) unbalanced force
forces equal in size and opposite in direction (not on test) balanced force
force that goes against motion when two surfaces rub together friction
force of pushing or pulling between magnetic poles magnetism
What are the three main forces we studied? gravitation, friction, magnetism
special type of gravitation that pulls things towards the earth. gravity
Will two north ends of a magnet attract or repel? repel
Will two south ends of a magnet attract or repel? repel
Will a north and south ends of a magnet attract or repel? attract
Forces always act in ________. (not on test) pairs
Is the gravitational force bigger or smaller when objects are farther apart smaller
If an object is extremely large, like the sun, it the gravitational force bigger or smaller? bigger
T/F? Gravity pulls people to the earth and earth towards the people True
If a moving object stops, then the forces must be ___________ (not on test) unbalanced
If a moving object keeps moving at the same speed and same direction, the forces must be (not on test) balanced
If a stopped object starts moving, the forces must be (not on test) unbalanced
If an object isn't moving, the forces must be (not on test) balanced
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? (not on test) 30 newtons
force that causes a material to twist (not on test) torsion
stretching force that pulls on a material (not on test) tension
pressing force that squeezes a material together (not on test) compression
the permanent parts of structure that cannot be removed (not on test) dead load
the movable and removable parts of a structure (not on test) live load
Is a penny an example of a live or dead load (not on test) live load
Is a floor an example of a live or dead load (not on test) dead load
Is a ceiling fan an example of a live or dead load (not on test) dead load
Is a person an example of a live or dead load (not on test) live load
Wind, rain, earthquakes, and sunshine are all examples of what kind of special load (not on test) environmental live load
What type of bridges use strong cables to help support the dead and live loads of the bridge (not on test) suspension bridges
type of force that occurs when two objects touch direct force
type of force that occurs even though the objects do not touch indirect force
Is magnetism a direct or indirect force both
Is gravitation a direct or indirect force indirect
Is friction a direct or indirect force direct
If all the atoms are lined up in a substance, then that substance is probably a magnet
Will a magnet lose its magnetic force if it is drop very very hard? yes
What two things affect gravitation? mass and distance
Will a magnet lose its magnetic force if it is broken in half? no
Created by: Cabrini on 2007-02-14



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