13. Which is NOT an observation? A. It tastes sweet B. It smells gross C. It is 5 cm long D. It is green 14. A Filipino scientist discovers the body of an unknown species of frog in the rainforest of the Philippines. She writes several statements in her journal about the animal. Which of the following is an observation about the frog? A. The frog might be poisonous because it is very brightly colored B. The frog is probably a tree climber because it has large, round toe pads. C. It has a mass of 22.4 grams. D. I think the frog is a species of poison dart frog because of its size and color. 15. A student placed 50 worms in the middle of an aquarium containing a light, a cardboard tube, and a water dish. He waited five minutes and then recorded the data for the first trial in the table below. The student repeated this procedure two more times and recorded the results of all three trials. Which conclusion could you make about worms based on the results? | Trial | Number of Worms under light | Number of Worms in a cardboard tube | Number of Worms in the water dish | |---|---|---|---| | 1 | 12 | 37 | 1 | | 2 | 6 | 44 | 0 | | 3 | 7 | 43 | 0 | A. The worms prefer the darkness of a cardboard tube. B. Worms love water. C. There were 6 worms under the light in trial 2. D. There were 36 more worms in the cardboard tube versus the light in trial 3.
Answer (1)
To determine which is NOT an observation, we need to identify which option does not involve directly perceiving with senses or measuring using instruments. Observations are statements made based on the direct input of senses (sight, taste, smell, touch, and hearing) or quantitative measurements.
A. It tastes sweet - This is an observation involving the sense of taste.
B. It smells gross - This is an observation involving the sense of smell.
C. It is 5 cm long - This is an observation because it involves measurement.
D. It is green - This is an observation involving the sense of sight.
The answer is **None of the options can be concluded as not an observation because all involve senses or measurement. However, if referring to predicting a preference based on non-existent sensory or measurement data, one could infer without data.
In the scenario provided, an observation is a statement based on direct measurement or perception about the frog.
A. The frog might be poisonous because it is very brightly colored - This is a hypothesis, not an observation.
B. The frog is probably a tree climber because it has large, round toe pads - This is an inference, not an observation.
C. It has a mass of 22.4 grams - This is an observation because it involves a direct measurement.
D. I think the frog is a species of poison dart frog because of its size and color - This is a hypothesis, not an observation.
The answer is C. It has a mass of 22.4 grams.
Based on the data provided in the table, a conclusion can be made about the worms' behavior:
A. The worms prefer the darkness of a cardboard tube - This conclusion is supported by the data since the majority of worms in all trials are found in the cardboard tube indicating a preference for darkness or enclosure.
B. Worms love water - This is not supported by the data as very few worms were in the water dish.
C. There were 6 worms under the light in trial 2 - This is a specific observation from Trial 2 but does not represent a general conclusion.
D. There were 36 more worms in the cardboard tube versus the light in trial 3 - This specific numerically correct observation from Trial 3 does not represent a general conclusion.
The most accurate conclusion supported by the overall trend in the data is A. The worms prefer the darkness of a cardboard tube.
