Put your name and today’s date on your paper Number from 1-7 Bellwork 8-30-16 Put your name and today’s date on your paper Number from 1-7

1. What formula do you use to measure density? D=L x W D=L x W x H D=M/V D=M x V

2. An engineering company is testing a new weather-forecasting program 2. An engineering company is testing a new weather-forecasting program. Which procedure would best verify that the program is making accurate predictions? a. comparing the predictions of the program to the actual weather b. comparing the predictions of the program to other predictions c. using the program to verify events not related to weather d. using the program to verify past weather-related events

3. A company designed a robotic lawn mower prototype to mow lawns without any human supervision. They intend to sell this machine to landscaping companies and lawn and gardening stores. Which of the following would be the BEST method to test this prototype? Place the mower on a field of freshly cut grass. Leave the machine there for three hours. Return to the field later to pick up the mower. b. First: identify a need. Second: Develop several designs, Third: Build a prototype, Fourth: Test the prototype, Fifth: Modify and retest the prototype c. Design a computer simulation of the robotic lawn mower. Practice cutting the grass in this simulated environment for one hour. d. Take the machine to a grassy field. Turn it on, leave it there, and come back in two hours to see if the grass is mowed.

a. hammer, string, and nails b. string, beaker, and water 4. Students are to build a model bridge using toothpicks and wood glue. The design of the bridge must support a specific weight and measure 20 centimeters long. Which tools would best help determine if the model bridge meets the design requirements? a. hammer, string, and nails b. string, beaker, and water c. ruler, weights, and string d. glue, toothpicks, and tweezers

a. improve the design of the system 5. Some scientists want to design a system of instruments that will evaluate ocean currents, temperatures, and winds in order to predict weather patterns. What should they do before they produce the first complete working version of the system? a. improve the design of the system b. evaluate the results of the system c. build a prototype of the system d. communicate results

6. A technology company has identified the need for a smaller laptop computer that weighs less, but they do not have enough knowledge about how to build it. What would be the next logical step engineers would take to design and produce this laptop computer? a. build a new type of laptop battery b. research current laptop technology c. Build a prototype computer d. Test the computer

7. A student had two identical pans 7. A student had two identical pans. The student filled each pan with 20 grams of water before placing both pans in the same freezer. The water in Pan 1 took 20 minutes to freeze. The water in Pan 2 took 30 minutes to freeze. Which of these conclusions best explains the difference in the amount of time it took the two pans of water to freeze? a. The water in pan 2 had a greater final mass than the water in Pan 1. b. The water in Pan 2 had a greater starting volume than the water in Pan 1. c. The water in Pan 2 had a higher starting temperature than the water in Pan 1. d. The water in Pan 2 had a lower starting temperature than the water in Pan 1.

Pencils down, get out a pen to grade your paper.

1. What formula do you use to measure density? D=L x W D=L x W x H D=M/V D=M x V

2. An engineering company is testing a new weather-forecasting program 2. An engineering company is testing a new weather-forecasting program. Which procedure would best verify that the program is making accurate predictions? a. comparing the predictions of the program to the actual weather b. comparing the predictions of the program to other predictions c. using the program to verify events not related to weather d. using the program to verify past weather-related events

3. A company designed a robotic lawn mower prototype to mow lawns without any human supervision. They intend to sell this machine to landscaping companies and lawn and gardening stores. Which of the following would be the BEST method to test this prototype? Place the mower on a field of freshly cut grass. Leave the machine there for three hours. Return to the field later to pick up the mower. b. First: identify a need. Second: Develop several designs, Third: Build a prototype, Fourth: Test the prototype, Fifth: Modify and retest the prototype c. Design a computer simulation of the robotic lawn mower. Practice cutting the grass in this simulated environment for one hour. d. Take the machine to a grassy field. Turn it on, leave it there, and come back in two hours to see if the grass is mowed.

a. hammer, string, and nails b. string, beaker, and water 4. Students are to build a model bridge using toothpicks and wood glue. The design of the bridge must support a specific weight and measure 20 centimeters long. Which tools would best help determine if the model bridge meets the design requirements? a. hammer, string, and nails b. string, beaker, and water c. ruler, weights, and string d. Glue, toothpicks, and tweezers

a. improve the design of the system 5. Some scientists want to design a system of instruments that will evaluate ocean currents, temperatures, and winds in order to predict weather patterns. What should they do before they produce the first complete working version of the system? a. improve the design of the system b. evaluate the results of the system c. build a prototype of the system d. communicate results

6. A technology company has identified the need for a smaller laptop computer that weighs less, but they do not have enough knowledge about how to build it. What would be the next logical step engineers would take to design and produce this laptop computer? a. build a new type of laptop battery b. research current laptop technology c. Build a prototype computer d. Test the computer

7. A student had two identical pans 7. A student had two identical pans. The student filled each pan with 20 grams of water before placing both pans in the same freezer. The water in Pan 1 took 20 minutes to freeze. The water in Pan 2 took 30 minutes to freeze. Which of these conclusions best explains the difference in the amount of time it took the two pans of water to freeze? The water in pan 2 had a greater final mass than the water in Pan 1. b. The water in Pan 2 had a greater starting volume than the water in Pan 1. c. The water in Pan 2 had a higher starting temperature than the water in Pan 1. d. The water in Pan 2 had a lower starting temperature than the water in Pan 1.

Technology and Society Technology provides solutions for many types of social, and economic needs. Intended Benefit An intended benefit is the positive purpose for which a technology is designed to be used. Cell phones allow people to stay connected with others and to call for help....

Unintended Consequences are uses or results that engineers do not purposely include in the design of products. An unintended consequence can be beneficial. These towers have been disguised as trees to minimize their detracting from landscape

Can I: Describe the difference between adaptive and assisted bioengeneering? Bioengineering The application of engineering to living things, such as humans and plants, is called bioengineering.

Can I: Describe the difference between adaptive and assisted bioengeneering? Bioengineered technologies can be classified as either assistive or adaptive. Assistive technologies are developed to help organisms without changing them. Boys gets prosthetic hand made by 3-D printer

Adaptive bioengineered products change the living organism. Can I: Describe the difference between adaptive and assisted bioengeneering? Adaptive bioengineered products change the living organism. Prosthetic heart is an artificial organ that is permanently Implanted inside the human body

Assistive or Adaptive? Can I: Describe the difference between adaptive and assisted bioengeneering? Assistive or Adaptive?

Can I? Describe the 3 different types of models? TOC # 11 Scientific Models Notes

Can I: Describe the 3 different types of models? A representation of an object or a system is called a model or prototype.

3 Types of Scientific Models Can I: Describe the 3 different types of models? 3 Types of Scientific Models 1. Physical Models look like the thing they represent. For example, the model flower shown at right can be used to learn the parts of a real flower.

Can I: Describe the 3 different types of models? 2. Mathematical Models are made up of mathematical equations and data. The weather map shown below is a mathematical model.

Can I: Describe the 3 different types of models? 3. Conceptual Models are systems of ideas or are based on making comparisons with familiar things to explain an idea.

Models Are Just the Right Size Can I: Describe the 3 different types of models? Models Are Just the Right Size Models are often used to represent things that are very small or very large. For example, a cell in your body or the planet Earth would need a model for you to be able to study it.

Can I: Describe the 3 different types of models? Models are often used to help illustrate and explain scientific theories. In science, a theory is a unifying explanation for a broad range of hypotheses and observations that have been supported by testing.

3 types of Models (p18-19) Write down 1 limitation for each of these Can I: Describe the 3 different types of models? 3 types of Models (p18-19) Write down 1 limitation for each of these Mathematical Model Conceptual Model Physical Model

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