Question

1.______observation is made using one or more of the five senses.

changed in an experiment.
2. An independent variable is a variable that's _______ changed in an experiment.
3. An explanation based on an observation is a/an _______.
4. There may be only one____
variable in an experiment.
5.______observation is made using tools or measurement.
6. What's the difference between an observation and inference?

Read the experiment. Then, match the term on the left with its definition on the right.

Kendra is doing an experiment to see which brands of popcorn leave the fewest unpopped kernels. She popped one bag at a time for four minutes each. She tested
four brands: Jiffy Pop, Pop Secret, Great Value, and Redenbacher's. At the end of the four minutes, she opened the bag and counted the number of unpopped kernels,
recording the data. She repeated her experiment four times and recorded theaverage number of unpopped kernels in her data table.

Term :
7. Independent variable
8. Controlled variable
9. Responding variable

Definition:
a. The number of unpopped popcorn kernels
b. The brand of popcorn
c. The time the popcorn is cooked

Answer 1

The scientific method relies on qualitative and quantitative observations. Qualitative observations involve the senses, and quantitative ones involve measurements. The Just-Noticeable Difference concept influences experiment design and interpretation.

Step-by-step explanation:

The concept of scientific method is fundamental in conducting experiments and making discoveries in various scientific disciplines. It involves making qualitative or quantitative observations. Qualitative observations utilize the senses to describe properties without numerical data, such as noting that sulfur crystals are yellow, whereas quantitative observations involve measurements with both numbers and units, like recording the melting point of sulfur at 115.21° Celsius.

An example of applying these observations is seen in experiments testing hypotheses, like the one where a floral-scented mask versus an unscented mask could affect the time it takes to complete a maze. Moreover, the idea of the Just-Noticeable Difference ties into the scientific method, as it relates to our ability to detect differences in stimuli, which can be an important factor in designing experiments and interpreting their results.