1. Jennifer wants to know which of three light bulbs lasts the longest. In her lab journal she writes: “The light bulb with the lowest wattage will last

the longest.” Which part of the investigation has she written?

a. Questionb. Hypothesisc. Data analysisd. conclusion

2. Which part of an experimental design includes the variable that

is changed during an experiment?

a. The control groupb. The dependent variablec. The responding variabled. the independent variable

3. You are conducting an experiment in which you measure a person’s body temperature in

response to changes in air temperature. What is the independent variable that is

manipulated in this experiment?

a. Air temperatureb. Size of the personc. Person’s body temperatured. Size of the room the person is placed

in

4. What do repeated trials in an experiment allow a scientist to do?

a. Choose different dependent variables

b. Check the accuracy of the experimental results

c. Make changes in results that do not support a hypothesis

d. Change a hypothesis to support the results

5. Alison measured the mass of a sample as 3.12 kg. Which is another

way to write this measurement?

a. 312 gb. 3120 gc. 312 mgd. 2130 mg

6. Sam measured the growth of four plants over a three week period. Plant 1 had a total growth of 3 cm. Plant 2 had a total growth of 2 cm. Plant 3 grew a total of 5 cm, and plant 4 grew a total of 3 cm. What is the average growth of

all the plants?

a. 2.5 cmb. 3 cmc. 3.25 cmd. 4 cm

7. Which tool is used to measure a volume of liquid?

a. Graduated cylinderb. Pan balancec. Computerd. stopwatch

8. Cara wants to compare the masses of two different mineral samples. Which would be the

BEST tool to use?

a. Pan balanceb. Beakerc. Meter stickd. Graduated

cylinder

9. The weight of an object is measured with

a. A spring scaleb. A thermometer.c. A pan balanced. A graduated cylinder

10. Dylan is collecting data about the hardness of mineral samples. He wants to display the hardness of each sample on a scale of 1 to 10. His data can be

BEST represented visually in a

a. Line graphb. Circle graphc. Bar graph d. Written report