28 Questions

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Questions and Answers

- 1.You are given a mystery object in science class. Your teacher asks you to determine if your object is more or less dense than water. You place the object in the water and it sinks. What statement would best describe this situation?
- A.
The mystery substance is denser than water.

- B.
Water is denser than the mystery substance.

- C.
They both have the same mass.

- D.
The mystery substance must be hollow.

- 2.The formula for finding density is:
- A.
The volume divided by the mass. d=v/m

- B.
The mass multiplied by the volume. d=m*v

- C.
The mass divided by the volume. d=m/v

- D.
The volume multiplied by the mass. d=vm

- 3.You have two plastic vials. One contains 40ml of water and the other contains 40ml of alcohol. Which statement is correct?
- A.
Both vials have the same denisty.

- B.
Both vials have the same volume.

- C.
Both vials have the same mass.

- D.
All of the above.

- 4.Convert 3 miles to feet.
- A.
1760 feet

- B.
1760 miles

- C.
5280 feet

- D.
15840 feet

- 5.To solve the following problem what will you do?2 km = __________ m
- A.
Divide 2 by 1000

- B.
Multiply 2 by 100

- C.
Multiply 2 by 1000

- D.
Divide 2 by 100

- 6.To solve the following problem what will you do?300 seconds = ____________ minutes
- A.
Divide by 100

- B.
Divide by 60

- C.
Multiply by 60

- D.
Multiply by 100

- 7.3.75 ( or 3 3/4 years) = _____________ months
- A.
45

- B.
37.5

- C.
42

- D.
36

- 8.Miguel kicked the soccer ball 12 meters. How many centimeters did he kick the soccer ball?
- A.
1,200 cm

- B.
120 cm

- C.
12,000 cm

- D.
0.12 cm

- 9.2.45 would be rounded up to 2.5
- A.
True

- B.
False

- 10.11.23 would be rounded up to 11.5
- A.
True

- B.
False

- 11.A rectangular block of metal. The block has a mass of 320g. The dimensions of the block are 8 cm by 5 cm by 4 cm. From this data, what is the density of the metal? (hint: find the volume of a block first).
- A.
2.0 g/cm

- B.
0.5 g/cm

- C.
2.0 cm³

- D.
0.5

- 12.28.5 g of iron shot is added to a graduated cylinder containing 45.50 mL of water. The water level rises to the 49.10 mL mark, From this information, calculate the density of iron.
- 13.The mass of silver metal is 2500 g. The density of silver is 10.5 g/cm
^{3}. What is the Volume?- A.
238.1 cm³

- B.
26250 cm³

- C.
.0042 cg³

- 14.Types of Graphs. Pick 4
- A.
Scatterplot

- B.
Scatterbrained

- C.
Pie Chart

- D.
Line Graph

- E.
Linear plot

- F.
Bar Chart

- 15.What is missing from this graph?
- A.
Title

- B.
Defined y-axis

- C.
Defined x-axis

- 16.What volume is shown? What is the name of the line you use to read the measurement? (2 answers)
- A.
42

- B.
43

- C.
44

- D.
Meniscus

- E.
Mark of volume

- 17.Calculate the scale for x-axis of a graph using the data set in the table. Your graph paper is 20 boxes by 20 boxes. Start both the x- and y-axis at zero. (round up- hint not 5)
- 18.Calculate the scale for y-axis of a graph using the data set in the table. Your graph paper is 20 boxes by 20 boxes. Start both the x- and y-axis at zero.
- 19.A telephone booth that is 8 ft tall casts a shadow that is 4 ft long. Find the height of a lawn ornament that casts a 2 ft shadow.
- 20.A statue that is 12 ft tall casts a shadow that is 15 ft long. Find the length of the shadow that a 8 ft cardboard box casts.
- 21.Your science teacher needs to make more of a salt-water mixture. The concentration of the mixture that is needed is 35 grams of salt in 1,000. milliliters of water. How many grams of salt will be needed to make 1,500. milliliters of the salt-water?
- 22.What is your rate in miles/hour if you run at a speed of 2.2 miles in 20. minutes?
- 23.BONUS!!!12. Erica babysits for 4 ½ hours and is paid $27.a. How much does she make per hour?b. How much does she make for 8 hours?c. If the people she babysits for have $34 to pay her, how long can they stay out? Answer format $__, $__, __hours and __minsThis bonus is worth 30 points.