Physics 416 Quiz Sheet
Quiz 10
Name: ___________________________________
Use a grammar reference guide to answer the following questions:
Which of the following sentences uses commas correctly?
1. Data were taken for an hour, and the signal-to-noise ratio improved.
2. Data were taken for an hour and the signal-to-noise ratio improved.
3. She connected the power supply, and tested the current levels.
4. She connected the power supply and tested the current levels.
5. Before dividing the matrices, we checked for singularities.
6. Before dividing the matrices we checked for singularities.
7. The Hamiltonian operator, a critical part of the equation, is non-negligible.
8. The Hamiltonian operator a critical part of the equation is non-negligible.
9. The result appeared to be significant, but, it was not.
10. The result appeared to be significant, but it was not.
11. The result, however, was unaffected by the change.
12. The result, however was unaffected by the change.
13. The procedure was robust, simple, and straight-forward.
14. The procedure was robust, and simple.
15. If so, there is no need to continue.
16. If so there is no need to continue.
17. The point, in the upper left corner of the graph, shows the relation best.
18. The point in the upper left corner of the graph shows the relation best.