Grade 5 Science - Simple machines
Across
- 3. the weight supported by a structure or part
- 7. a sloping surface connecting two levels; incline
- 8. a piece of hard material with two principal faces meeting in a sharply acute angle, for raising, holding, or splitting objects by applying a pounding or driving force, as from a hammer
- 9. a circular frame or disk arranged to revolve on an axis, as on or in vehicles or machinery
- 10. two forces acting on an object are not equal in size
- 15. one of the simple machines, a plane surface inclined to the horizon, or forming with a horizontal plane any angle but a right angle
- 16. surface resistance to relative motion, as of a body sliding or rolling
- 17. a state of rest or balance due to the equal action of opposing forces
- 20. the transfer of energy expressed as the product of a force and the distance through which its point of application moves in the direction of the force
Down
- 1. two forces acting on an object that are equal in size
- 2. a force that moves a certain object over a determined distance
- 4. those machines that use two or more simple machines to create work
- 5. a threaded cylindrical pin or rod with a head at one end, engaging a threaded hole and used either as a fastener or as a simple machine for applying power
- 6. strength or power exerted upon an object
- 11. the pin, bar, shaft, or the like, on which or by means of which a wheel or pair of wheels rotates
- 12. machine a simple device for altering the magnitude or direction of a force. The six basic types are the lever, wheel and axle, pulley, screw, wedge, and inclined plane
- 13. a wheel, with a grooved rim for carrying a line, that turns in a frame or block and serves to change the direction of or to transmit force, as when one end of the line is pulled to raise a weight at the other end
- 14. the support, or point of rest, on which a lever turns in moving a body
- 18. a rigid bar that pivots about one point and that is used to move an object at a second point by a force applied at a third
- 19. the quantity of matter as determined from its weight