Universidad De Monterrey Introduction To Experimental Sciences Past Paper PDF, August 30, 2024

## UNIVERSIDAD DE MONTERREY ### VICERRECTORÍA DE EDUCACIÓN MEDIA SUPERIOR ### ACADEMY OF NATURAL SCIENCES ### INTRODUCTION TO EXPERIMENTAL SCIENCES #### **TYPE B** **Name**: Daphne Cepeda **Date**: August 30, 2024 **ID**: 661112 **Room**: 3304 #### **Secondary Evaluation: Topic 0 Scientific me...

## UNIVERSIDAD DE MONTERREY ### VICERRECTORÍA DE EDUCACIÓN MEDIA SUPERIOR ### ACADEMY OF NATURAL SCIENCES ### INTRODUCTION TO EXPERIMENTAL SCIENCES #### **TYPE B** **Name**: Daphne Cepeda **Date**: August 30, 2024 **ID**: 661112 **Room**: 3304 #### **Secondary Evaluation: Topic 0 Scientific method.** **Section I. Multiple choice.** (0.5 points each, total 4.5 points) 1. Circle the correct answer. * Degree of error of a measuring device. * Error bars * Uncertainty * Theory * Law * Possible answer to the investigation question. * Scientific method * Experimentation * Hypothesis * Scientific investigation * Is the condition that will be measured or investigated within the experimentation. * Controlled variable * Independent variable * Dependent variable * Hypothesis * Data that describe color, odor, shape or other physical characteristics (involves the use of senses). * Quantitative * Qualitative * Dependent variable * Independent variable * It is an organized process, a series of steps that scientists use to solve investigation problems. * Scientific investigation * Scientific method * Experimentation * Analysis * Is a controlled methodology to test the hypothesis. * Scientific method * Experimentation * Scientific investigation * Conclusion **II. Identify the type of data (Qualitative or Quantitative) of the following examples:** Identify: Provide an answer from a number of possibilities. 1. **Quantitative** - Length of a cell in micrometers. 2. **Quantitative** - Stem length in centimeters of the plant. 3. **Qualitative** - Change of scent of a chemical compound. **SECTION 2. ANALYSIS OF INFORMATION ** (4.5 points) Use the next figure to answer the questions. Below are the rates of recycled plastic in different countries. Answer the following questions. **Graph 1. Percentage of recycled plastic in different countries** A bar graph is shown with 14 countries on the x-axis and percentage of recycled plastic on the y-axis. The countries represented are: * Chile * South Korea * Germany * United Kingdom * Greece * Uruguay * Japan * United States * Canada * Australia * France * Sweden * Colombia * Brazil * Mexico 1. **State the independent variable in this investigation (1 point).** State: Give a specific name, value or other brief answer without explanation or calculation. **Countries.** 2. **State the dependent variable in this investigation (1 point).** State: Give a specific name, value or other brief answer without explanation or calculation. **Percentage of recycled plastic in different countries** 3. **Identify the country that has the lowest percentage of recycled plastic per country. (1 point)** Identify: Provide an answer from a number of possibilities. **Brasil** 4. **Calculate the difference in the percentage of recycled plastics between South Korea and Mexico. (1.5 points)** Calculate: Find a numerical answer showing the relevant process (unless instructed not to do so.) **48 - 5 = 43%** **SECTION 3. ANSWER THE FOLLOWING QUESTIONS(3 points)** 1. **List the steps of the scientific method (3 points).** List: Give a sequence of brief answers with no explanation * Observations * Questions * Hypothesis * Experimentation * Results * Conclusion 2. **Identify the types of variables in the following investigation (3 points).** Identify: Provide an answer from a number of possibilities. We want to know the growth of a plant (cm) by testing different times of sun exposure. To do this, seeds of the same type of plant are placed in two pots of the same size on day 0, during the next 2 months one plant is exposed to sunlight for 6 hours and the other plant is exposed to the sun for 2 hours a day. * **Dependent variable:** Growth of a plant in cm * **Independent variable:** Hours of Sun: 6 and 2 hours per day each plant. * **Controlled variable (s):** Type of plant, pots, days, months. *"This is my own work and was carried out in strict adherence to the honour code; any text or reference that was not of my authorship is cited, including sources extracted using artificial intelligence. I am aware that any academic dishonesty is graded with zero and the protocols apply according to the Academic Integrity Committee of Prepa UDEM."* **Signature** Daphne Michelle Cepeda Salinas.