Across
- 2. a method of teaching people to read by correlating sounds with letters or groups of letters in an alphabetic writing systems.
- 5. a pictorial symbol for a word or phrase. Pictographs were used as the earliest known form of writing, examples having been discovered in Egypt and Mesopotamia from before 3000 BC.
- 7. a metric unit of length, equal to one hundredth of a meter.
- 8. a large naturally occurring community of flora and fauna occupying a major habitat, e.g. forest or tundra.
- 9. a device consisting of a wheel or disk mounted so that it can spin rapidly about an axis which is itself free to alter in direction. The orientation of the axis is not affected by tilting of the mounting, so gyroscopes can be used to provide stability or maintain a reference direction in navigation systems, automatic pilots, and stabilizers.
- 11. a thing that tells time.
- 12. a big fluffy thing in the sky.
- 13. a system for transmitting massages from a distance along a wire, especially one creating signals by making and breaking an eletrical.
Down
- 1. an expert in or student of the branch of science concerningganisms.
- 2. the continuous line forming the boundary of a closed geometric figure.
- 3. an instrument measuring atmospheric pressure, used especially in forecasting the weatherand determining altitude.
- 4. a place.
- 6. a pair of earphones joined by a band placed over the head, for listening to audio signals such as music or speech.
- 10. thing to do and eat.
- 12. an part of your head.