10 Questions
| Total Attempts: 253

Questions and Answers

- 1.How many significant figures are in 3.04?
- A.
2

- B.
3

- C.
1

- D.
What are significant figures?

- 2.Convert 402 m into Km.
- A.
.402 km

- B.
402000 km

- C.
4.02 Km

- D.
40.2 Km

- 3.Mrs. McCarthy wants to test what the freezing point of a 1% salt water solution is. She fills a vial with 10 mL of tap water and another vial with 10 mL of the 1% salt water solution. She then puts it in the freezer with a thermometer in each vial. She records the temperature every 2 minutes until it freezes. What is the independent variable in this experiment?
- A.
The thermometer

- B.
The time it took for the salt water to freeze

- C.
The regular water

- D.
The types of water

- 4.Mrs. McCarthy wants to test what the freezing point of a 1% salt water solution is. She fills a vial with 10 mL of tap water and another vial with 10 mL of the 1% salt water solution. She then puts it in the freezer with a thermometer in each vial. She records the temperature every 2 minutes until it freezes. What is the dependent variable in this experiment?
- A.
The thermometer

- B.
The time it takes for the salt water to freeze

- C.
The regular water

- D.
The types of water

- 5.Mrs. McCarthy wants to test what the freezing point of a 1% salt water solution is. She fills a vial with 10 mL of tap water and another vial with 10 mL of the 1% salt water solution. She then puts it in the freezer with a thermometer in each vial. She records the temperature every 2 minutes until it freezes. What is the control in this experiment?
- A.
The thermometer

- B.
The time it took for the salt water to freeze

- C.
The regular tap water

- D.
The types of water

- 6.What is 3.22 x 10
^{3}in long form?- A.
.322

- B.
32.2

- C.
322

- D.
3220

- 7.How many significant figures are in 0.00345
- A.
6

- B.
5

- C.
3

- D.
4

- 8.Convert 250 Km into mm.
- A.
.250 mm

- B.
.000000250 mm

- C.
25000mm

- D.
250000000 mm

- 9.A accepted measurement of a length of wood is 3.5 m. Your measurement of a piece of wood is 2.5 m. What is your percent error?
- A.
28.6%

- B.
71.4%

- C.
35%

- D.
25%

- 10.Using significant figures, what is the answer to the following problem?3.46 x 6.2 x 4 x 5.035
- A.
432

- B.
400

- C.
430

- D.
432.04

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