Grade 8 Physics Review

3. The product of density and volume of an object.
4. A laboratory instrument commonly used to display and analyze the waveform of electronic signals or analyze sound waves.
6. The measure of electrical energy.
7. Any electrically conducting pathway comprising an electric circuit along which the whole current flows through each component.
8. The ability of materials to resist the flow of current.
9. An electrical component to cut the flow of current in a circuit.
11. The measure of potential difference.
14. A chart that visualizes energy and its transformation visually and quantitatively.
16. The measurement of how tightly a material is packed together.
17. A physical quantity that expresses quantitatively the attribute of hotness or coldness.
19. An electrical component to resist the flow of current.
20. The measure of the quantity of a charged particle.
21. The measure of temperature.
22. The stored energy in gasoline.
24. The measure of current.
25. The space without matter.

1. A type of interference when waves come together so that they completely cancel each other out.
2. Any electrical path that branches so that the current divides and only part of it flows through any branch.
5. The rate at which electrons flow past a point in a complete electrical circuit.
10. Italian physicist whose invention of the electric battery in 1800 provided the first source of continuous current.
12. This measuring instrument is the combination of an amperemeter, an ohmmeter and a voltmeter.
13. The thermal energy transfer without medium.
15. A phenomenon in which two or more waves superimpose to form a resultant wave of greater or lower amplitude.
18. The type of a dissipated energy.
23. The amount of thermal energy in a material.