
Grade 5 Science Quiz - Forces Acting on Structures
Quiz by Arie Rosenberg
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The following are all examples of internal forces except...
The following are all examples of external forces except...
A structure is ready to be used in real life once...
Which of the following is a simple machine?
An axe is an example of which simple machine?
A third class lever...
Which of the following is an example of a first class lever?
A pulley can be used to...
The actual effect of a force on a structure depends on the magnitude, or size, of the force, the direction and the location where the force is applied.
External forces such as extreme weather pose a constant threat to the structural reliability of structures.Â
The two main types of forces are static and dynamic forces.
Internal forces resist the external forces acting on a structure.Â
In order to maintain structural reliability the external forces must be greater than the internal forces.Â
A force is
Complex machines are
A static load is
Gravity is a force caused by the earth pulling objects toward its centre.
Torsion isÂ
Compression is
Simple machines make it harder to move a load.Â