Across
- 2. The branch of science concerned with the nature and properties of matter and energy
- 5. A unit of length equal to one billionth of a meter
- 6. The branch of science concerned with the substances of which matter is composed, their properties and reactions
- 8. A unit used to measure the intensity of a sound or the power level of an electrical signal by comparing it with a given level on a logarithmic scale
- 10. The branch of biology that deals with the relations of organisms to one another and to their physical surroundings
- 13. The branch of science concerned with the study of the earth, its structure, and its changing physical features
- 14. The force that attracts a body towards the center of the earth, or towards any other physical body having mass
Down
- 1. The branch of science that deals with celestial objects, space, and the physical universe as a whole
- 3. A celestial object consisting of a nucleus of ice and dust, when near the sun a “tail” of gas and dust particles pointing away from the sun
- 4. A subatomic particle with a negative electric charge
- 7. The study of the physical and natural world through observation and experiment
- 9. The branch of science concerned with living organisms and life processes
- 11. A unit of measurement of temperature on the absolute scale
- 12. A unit of measurement for angles, one _______ is equivalent to 1/360th of a complete revolution
- 15. The smallest particle of a chemical element that can exist