Question

name: aylin amoeba sisters video recap: nature of science 7. observations and inferences are important in science. how would you explain the difference between the two words? observations are things that i see and inferences is a conclusion that is determined by evidence and reasoning. 8. constants (\controlled variables\) and a control are easily confused by students! how would you explain the difference between the two words? constants are objects or values that stay the same. and a control is a object that stays unchanged to be used as comparison with no treatment used. 9. why is a control group generally very important in an experiment? it helps for comparison by comparing experiment group to the control group. data collection: pinkys science fair project in junior high focused on an observation that the crickets outside her window chirped less frequently when the temperature was colder. fun fact: there are free \cricket chirp calculators\ online you can explore, which didnt exist freely online when pinky was in junior high. consider if data was collected consisting of the average number of cricket chirps at different temperatures in her backyard. 10. which variable would be an independent variable? the temperature 11. which variable would be a dependent variable? the number of cricket chirps 12. which variable (#10 or #11) would ideally be plotted on the x - axis of a graph? the location 13. in the collection of data, list at least 3 important constants (also known as \controlled variables\)? 14. brainstorm and write at least 3 potential challenges or important points to consider when conducting the described data collection. example: repeated trials are not mentioned, and this would be important for optimal data collection. a) b) c)

Explanation:

Step1: Identify independent variable

The independent variable is the one that is manipulated or changed. In the context of the cricket - chirping experiment, temperature is what is being varied, so the independent variable is temperature.

Step2: Identify dependent variable

The dependent variable is the one that is measured and is affected by the independent variable. Here, the number of cricket chirps depends on the temperature, so the number of cricket chirps is the dependent variable.

Step3: Determine X - axis variable

In a graph, the independent variable is typically plotted on the X - axis. So, the temperature should be plotted on the X - axis.

Step4: List constants

Constants are factors that are kept the same throughout the experiment. For this experiment, they could be: the location (backyard), the time of day (to keep light and other factors consistent), the type of crickets (assuming they are the same species in the area).

Step5: List challenges

A) Other environmental factors like humidity can also affect cricket chirping and may not be controlled.
B) There could be variations in individual crickets' chirping rates even at the same temperature.
C) External noise could interfere with accurately counting the number of chirps.

Answer:

1. Temperature
2. The number of cricket chirps
3. Temperature
4. Location, time of day, type of crickets
5. A) Humidity can affect chirping. B) Variations in individual crickets' chirping rates. C) External noise can interfere with counting.