Vocabulary
Across
- 3. A scientist who studies volcanoes and volcanic phenomena.
- 4. An instrument for copying a plane figure to a desired scale, consisting of styluses for tracing and copying mounted on four jointed rods in the form of a parallelogram with extended sides.
- 5. Run by or using compressed air
- 7. Providing information or stimulation for a number of senses, not only sight and sound
- 8. A device for shifting gears on a bicycle by moving the chain between sprocket wheels of different sizes.
- 10. An air deflector mounted usually at the rear of an automobile to reduce lift at high speeds
- 11. Any of various tubular optical instruments that contain reflecting elements, such as mirrors and prisms, to permit observation from a position displaced from a direct line of sight.
- 12. Completely confused or disordered
- 13. A lustrous, hard, steel-gray metallic element, resistant to tarnish and corrosion and found primarily in chromite
- 14. a swinging lever, weighted at the lower end, for regulating the speed of a clock mechanism
- 16. A thin plastic or metal woven mesh
Down
- 1. A salt or ester of phosphoric acid
- 2. A slight puncture made by or as if by a pin.
- 6. A hard, white, translucent ceramic made by firing a pure clay and then glazing it with variously colored fusible materials; china.
- 9. A flaky deposit left in containers such as kettles by the action of heat on water containing calcium salts
- 15. A separate streamlined enclosure on an aircraft for sheltering the crew or cargo or housing an engine.