1. 1. Jennifer wants to know which of three light bulbs lasts the longest
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?
Question
Hypothesis
Data analysis
conclusion 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 29

2. 2. Which part of an experimental design includes the variable that is changed during an experiment?
The control group
The dependent variable
The responding variable
the independent variable 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 30

3. Person’s body temperature Size of the room the person is placed in
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?
Air temperature
Size of the person
Person’s body temperature
Size of the room the person is placed in

4. 4. What do repeated trials in an experiment allow a scientist to do?
Choose different dependent variables
Check the accuracy of the experimental results
Make changes in results that do not support a hypothesis
Change a hypothesis to support the results

5. 5. Alison measured the mass of a sample as 3. 12 kg
5. Alison measured the mass of a sample as 3.12 kg. Which is another way to write this measurement?
312 g
3120 g
312 mg
2130 mg

6. 6. Sam measured the growth of four plants over a three week period
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?
2.5 cm
3 cm
3.25 cm
4 cm

7. 7. Which tool is used to measure a volume of liquid?
Graduated cylinder
Pan balance
Computer
stopwatch

8. 8. Cara wants to compare the masses of two different mineral samples
8. Cara wants to compare the masses of two different mineral samples. Which would be the BEST tool to use?
Pan balance
Beaker
Meter stick
Graduated cylinder

9. 9. The weight of an object is measured with
A spring scale
A thermometer.
A pan balance
A graduated cylinder

10. 10. Dylan is collecting data about the hardness of mineral samples
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
Line graph
Circle graph
Bar graph
Written report