lunes, 31 de agosto de 2009

Homework 2 (p.18)

Write a list of scientific attitudes.

Scientific inquiry (p.14-18)

Scientific inquiry is consider the diverse ways in wich scientists study the natural world and proposes explanations based on evidence they gather.

Posing questions

Scientific inquiry often begins with a problem or question about an observation. Curiosity plays a large role as well. The questions come from experiences that you have and from observations and inferences that you make.

Developing a hypothesis

The processes to try answer the question. The hypothesis is a possible explanation for a set of observations or answer to a scientific question. In science, a hypothesis must be testable. This means that researchers must be able to carry out investigations and gather evidence that will either support or disprove the hypothesis.

Design an experiment

Is for test your hypothesis, suppose observe all the factors in the experiment, this include the variables, or factors that can change in an experiment. An experiment in wich only one variable is manipulated at a time is called a controlled experiment. The one variable that is purposely changed to test a hypothesis is called manipulated variable. The factor that may change in response to the manipulated variable is called the responding variable. The operational definition is a statement that describes how to measure a particular variable or how to define a particular term.

Collect and interpret data.

Is to collect and explain different results. Data are the facts, figures, and other evidence to get through observations. A data table is an organized way to collect ad record observations, a graphic can help you interpret data.

Draw conclusions

Is a summary of what you have learned from an experiment and that evidence supports the original hypothesis.

Communicating

An important part of the scientific inquiry process. Is the sharing of ideas results and experimental findings with others through writing and speaking. Scientists share their ideas in many ways, meetings, exchange on the internet, and publish articles in scientific journals. The communicate expose their procedures in full detail so that other scientists can repeat their experiments.

Homework 1 (p.6-13)

1.- What does observe involve?

2.-What skills do scientists use to learn about the world?

3.- What is science?

4.- What do quantitative observations involve?

5.- What do qualitative observations involve?

6.-What is infer?

7.-What does predicting mean?

8.- Why is it useful to classify?

9.- What is make models?

10.- What does life science mean?

11.-Give examples of how observations and inferences might be important.

12.- Give examples of life science carriers.

13.- Give examples of predict, classify and make models

domingo, 23 de agosto de 2009

What is Science? (p. 6-8)

Science is a way of learning about the natural world, it is also the knowledge gained by exploring the natural world.
Scientists use skills such as observing, inferring, predicting, classifying, and making models to learn more about the world.
Observe means using one or more of your senses to gather information.
The human senses are sight, hearing, touch, taste, and smell.
The observations can be either quantitative or qualitative.
Quantitative observations deal with a number, or amount.
Qualitative observations deal with descriptions that cannot be expressed in numbers.
To infer is the action of explaining or interpreting the things you observe.
To predict means making a forecast of what will happen in the future based on past experience or evidence.
To classify is the process of grouping items that are alike in some way.
To classify things helps to stay organized so they can be easily find and use later.
To make models involves create representations of complex objects or processes.
Models help people to study and understand things that are complex or that can’t be observed directly.
Life science is the study of living things. Life science is also known as Biology. Scientists who study living tings are called biologists.
Biology is the science that studies all of living things.
People who study Life science careers can work in forests, laboratories, farms, or hospitals.
Cyr M, Miaoulis I, Padilla M.,"Science Explorer", Ed. Pearsons, USA,2009.