Across
- 2. - a push or pull acting on an object
- 4. - energy stored in the bonds between atoms in molecules.
- 6. - force that opposes motion between two surfaces.
- 8. - done when a force moves an object over a distance.
- 10. - a flat surface set at an angle to the horizontal. It makes it easier to move objects to a higher level.
- 13. - a wind that blows from the land towards a body of water at night. This happens because land cools faster than water after sunset.
- 15. - total kinetic energy of all the particles in an object due to their motion.
- 17. - the unit of measurement for work
- 18. - some simple machines where a small movement at one end results in a larger movement at the other end.
- 19. - a simple machine consisting of a wheel attached to a smaller axle. It can be used to multiply force or speed
- 21. - a triangular-shaped tool used to separate objects. An axe blade is a type of wedge used for splitting wood.
- 23. - an inclined plane wrapped around a cylinder. It's used to hold things together or to lift objects.
Down
- 1. - a measure of how well a machine or process converts input energy into useful output energy.
- 3. - transfer of heat energy through electromagnetic waves.
- 5. - random movement of particles in a fluid caused by collisions.
- 7. - a device that multiplies the force applied to it
- 9. - transfer of heat by the movement of fluids (liquids or gases).
- 11. - a simple machine consisting of a rigid bar that rotates around a fixed point called a fulcrum.
- 12. - the energy an object possesses due to its motion.
- 14. - form of energy that flows from warmer to colder objects.
- 16. - a wheel with a grooved rim around which a cord passes. It's used to change the direction of a force and can make lifting easier.
- 20. - a wind that blows from a large body of water towards the land during the day. This occurs because land heats up faster than water during daylight hours.
- 22. - transfer of heat through direct contact between particles of matter.