Objective 1 – The Nature of Science
Objective 1 – The Nature of Science
1. The ingredients described above are used to make a bonding agent. The most important safety precaution to take when applying this bonding agent is to –
F dry it with a small flame
G work in a well-ventilated area
H cover the work area with newspaper
J wear a lab coat
2. Which set of equipment would be best to use to test the effect of temperature on solution acidity?
F A balance and a thermometer
G A pH meter and a barometer
H A balance and litmus paper
J A thermometer and a pH meter
3. Which piece of equipment would be used to precisely measure the volume of an acid?
A C
B D
4. A valid study would include a control group containing
A bean seed, tomato seed, sunflower seed, and water
B water and 2% root hormone
C water only
D bean seed, tomato seed, sunflower seed, water, and 1% root hormone
5. Which of these is a hypothesis that can be tested through experimentation?
F Bacterial growth increases exponentially as temperature increases.
G A fish’s ability to taste food is affected by the clarity of aquarium water.
H Tadpoles’ fear of carnivorous insect larvae increases as the tadpoles age.
J The number of times a dog wags its tail indicates how content the dog is.
6. The illustration above shows volume levels of a liquid in a graduated cylinder before and after a sample was removed. According to this information, what was the volume of the sample to the nearest milliliter? Record and bubble your answer below.
7. The table above shows the atomic radii of some elements in Periods 1 through 4 of the periodic table. Which inference can be made from this information?
F Atomic radii decrease from left to right.
G Atomic radii increase from bottom to top.
H Atomic radii decrease from right to left.
J Atomic radii double from top to bottom.
8. According to the information shown above, what is the best prediction for the boiling point of the seven-carbon alcohol?
A 169°C
B 178°C
C 186°C
D 192°C
9. The graph above shows the results of a study testing chemical pesticides on a pest species common to cotton plants. Different chemical pesticides were used in five different areas. According to these results, which of the following is the most effective chemical for controlling this pest species?
A R
B S
C T
D V
10. Which conclusion is best supported by these data?
F Earth’s surface is composed mostly of silicon and calcium.
G Oxygen is closer to Earth’s surface than aluminum.
H There is more aluminum than calcium at Earth’s surface.
J Silicon is much heavier than iron at Earth’s surface.
Percent Differences in Cytochrome cHorse / Dog / Kangaroo / Penguin
Horse / 0 / 6 / 7 / 12
Dog / 6 / 0 / 7 / 10
Kangaroo / 7 / 7 / 0 / 10
Penguin / 12 / 10 / 10 / 0
11. The table above shows percent differences in cytochrome c in four different animals. According to the table, which two animals are most closely related to each other?
A Horse and dog
B Dog and kangaroo
C Horse and penguin
D Penguin and kangaroo
12. Which of the following is a strength of this hypothesis?
F It is more logical than past hypotheses.
G It agrees with the opinion of most people.
H It can be examined using scientific means.
J It challenges the current theory of atoms.
Ulcer Study ResultsTreatment Group (200) / Patients Reporting Relief
(%)
After 2 Weeks / After 4 Weeks
Received medication / 33 / 92
Received placebo (sugar tablet) / 13 / 58
13. The table above shows the results of a study testing the effectiveness of an ulcer medication. Why was one group given a sugar tablet?
A To include a control group
B To have an experimental group
C To provide a variety of treatments
D To give the body additional nutrients
1.G 2.J 3.C 4.A 5.F 6.9 7.F 8.B 9.C 10.H 11.A 12.H 13.A