Physical science

4. the force acting on the object due to gravity
5. a radiant light and heat from the sun
8. a measurement of the length between two points
11. any atom or group of atoms that bears one or more positive or negative electrical charges
12. a wheel that carries a flexible rope, cord, cable, chain, or belt on its rim
13. the energy that is emitted by matter in the form of photons or electromagnetic waves
15. a fundamental particle with negative electric charge
17. the point on the medium that exhibits the maximum amount of positive or upward displacement from the rest position
20. a change in frequency and wavelength of a wave
23. a line graph that represents the change of phase of matter
24. a positive charge equal in magnitude to a unit of electron charge
25. of, worked by, charged with, or producing electricity

1. the rate of change of the velocity of an object with respect to time
2. stored energy that depends upon the relative position of carious parts of a system
3. one of two or more species of atom of a chemical element with the same atomic number and position in the periodic table
5. the distance of a moving object in a given amount of time
6. the measured period during which an action exists
7. the capacity for doing work
9. the energy that it possesses due to its motion
10. a measure of the amount of matter in an object
14. a mechanism that converts rotational motion to linear motion
16. the phase transitions that a substance undergoes as head is added to it
18. the amount of heat per unit mass needed to icnrease the temperature of a material by one degree celsius or kelvin
19. the distance in the line of advance of a wave from any one point to the next point of corresponding phase
21. a simply a triangular tool, often made of metal, woof, stone, or plastic
22. the universal force of attraction acting between all matter