Across
- 1. a measure of the compactness of a substance, expressed as its mass per unit volume
- 4. the product of a body's mass and its velocity
- 6. the emission or transfer of radiant energy as particles, electromagnetic waves, sound, etc
- 7. the act of reflecting or the state of being reflected
- 11. the energy of a body or system as a result of its position in an electric, magnetic, or gravitational field
- 12. the basic SI unit of electric current
- 14. a physical quantity expressing the amount of matter in a body
- 16. the tendency of a body to preserve its state of rest or uniform motion unless acted upon by an external force
- 18. substance that occupies space and has mass
- 20. a unit of heat, equal to 4.1868 joules
- 21. the derived SI unit of electrical resistance
- 22. the derived SI unit of force
- 24. the basic unit of matter
- 27. the rate in which the velocity changes
- 29. propagation of disturbances from place to place in a regular and organized way
- 30. any phenomenon associated with stationary or moving electrons, ions, or other charged particles
- 31. a substance, body, or system that conducts electricity, heat, etc
- 33. the force of attraction that moves or tends to move bodies towards the centre of a celestial body
- 35. the number of times that a periodic function or vibration repeats itself in a specified time, often 1 second
- 36. a dynamic influence that changes a body from a state of rest to one of motion or changes its rate of motion
- 37. a force that tends to produce an elongation of a body or structure
- 39. the distance, measured in the direction of propagation, between two points of the same phase in consecutive cycles of a wave
- 40. the derived SI unit of frequency
- 41. the basic SI unit of thermodynamic temperature
- 42. motion in a gas or liquid in which the warmer portions rise and the colder portions sink
- 43. a force that acts inwards on any body that rotates or moves along a curved path and is directed towards the axis of rotation
Down
- 1. a deviation in the direction of a wave at the edge of an obstacle in its path
- 2. the derived SI unit of work or energy
- 3. a measure of the rate of motion of a body expressed as the rate of change of its position in a particular direction with time
- 5. electric sparks or crackling produced by friction
- 8. the attribute of matter by which it responds to electromagnetic forces responsible for all electrical phenomena
- 9. the change in direction of a propagating wave in passing from one medium to another in which it has a different velocity
- 10. a body with finite mass that can be treated as having negligible size, and internal structure
- 13. a device, such as a transistor or integrated circuit, that depends on the properties of such a substance
- 15. the opposition to a flow of electric current through a circuit component, medium, or substance
- 17. a region containing no matter; free space
- 19. the energy of motion of a body, equal to the work it would do if it were brought to rest
- 23. power derived from the utilization of physical or chemical resources, especially to provide light and heat or to work machines
- 25. a resistance encountered when one body moves relative to another body with which it is in contact
- 26. wave an electromagnetic wave of radio frequency
- 28. the derived SI unit of electric charge
- 31. a fictitious force that can be thought of as acting outwards on any body that rotates or moves along a curved path
- 32. a flow of electric charge through a conductor
- 34. the derived SI unit of electric potential
- 38. the derived SI unit of power