Across
- 3. able to be noticed or perceived; discernible able to be discerned; perceptible.
- 5. the scale of temperature in which water freezes at 0° and boils at 100° under standard conditions.
- 8. a substance which does not readily allow the passage of heat or sound.
- 9. the spreading of something more widely.
- 11. the available body of facts or information indicating whether a belief or proposition is true or valid.
- 12. an assertion of the truth of something, typically one that is disputed or in doubt.
- 15. the quality or state of being natural.
- 17. the pressure exerted by the weight of the atmosphere, which at sea level has a mean value of 101,325 pascals (roughly 14.6959 pounds per square inch). Also called barometric pressure.
- 19. Of two quantities: such that one increases in proportion to a decrease in the other.
- 20. the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat.
- 22. the degree of compactness of a substance.
- 24. the lowest temperature that is theoretically possible, at which the motion of particles that constitutes heat would be minimal. It is zero on the Kelvin scale, equivalent to –273.15°C or –459.67°F.
- 25. the process by which heat or electricity is directly transmitted through a substance when there is a difference of temperature or of electrical potential between adjoining regions, without movement of the material.
- 26. a degree of density, firmness, viscosity, etc.
- 27. the degree or intensity of heat present in a substance or object, especially as expressed according to a comparative scale and shown by a thermometer or perceived by touch.
- 28. energy associated with microscopic forms of energy.
- 29. the action of thinking about something in a logical, sensible way.
Down
- 1. a three-dimensional representation of a person or thing or of a proposed structure, typically on a smaller scale than the original.
- 2. a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.
- 4. the ability to be foreseen
- 6. a question that a research project sets out to answer
- 7. A controled variable is any factor that is controlled or held constant in an experiment.
- 10. the quality of being hot; high temperature.
- 13. the quantity of matter which a body contains, as measured by its acceleration under a given force or by the force exerted on it by a gravitational field.
- 14. the amount of space that a substance or object occupies, or that is enclosed within a container, especially when great.
- 16. matter cannot be created or destroyed, but it can change forms.
- 18. corresponding in size or amount to something else.
- 21. the emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles which cause ionization.
- 23. not certain or fixed; provisional.