Science Experiments

Archive for February, 2009

Question: Are we just some huge scientific experiment in some outer space alien’s science class???..Has he/she managed

to encapsulate us in a drop of primordial water, and slowly add ingredients to it in order to create life, such as carbon, nitrogen, hydrogen, oxygen,,,etc…If this is the case wonder what kind of grade this alien will get from this failure we call earth, ???

Answer: Dude, I have asked myself this same basic question. What if we are some experiment? So an alien creates life-small brain big body etc–that is as far as its technology got it. Then, after more experimentation and a few hundred million years or 20 ET years, another alien comes up with a rudimentary mammal. Then a few hundred million years later ET developes a better brain and so on and so on until there is us. Maybe they wipe us all out when they want to start a new dominant life form for our earth. Like the different die outs that have occurred throughout history. Wonder when the next one will come and they replace us with a better-brained upgrade that ET created.
Whew, good luck, I have struggled with this question for most of my 40 years.

Science experiment: shooting bugs a high speed – We Are The Aliens – BBC Space

Question: Science Experiment Help.?

For my experiment i tested four people on reaction time. First i had each catch a ruler and see the distance on the ruler. Then i had them play 30 minutes of video games then tested the subjects again.

Answer: Testing reaction time by dropping a ruler is a good experiment. In fact, one can calculate the speed of reaction by how far down the ruler falls. I hope that you had multiple tests for each person, otherwise it will be difficult to run any statistical tests with that small sample of 4 people.

Scientists usually set up a null hypothesis and then see if they can disprove it. If you can disprove it, then you can offer a new hypothesis. You can’t really prove anything. Einstein once said a thousand scientists can’t prove me right, but one can prove me wrong.

The null hypothesis is that “there is no difference in reaction time before and after playing with video games”. In the ideal situation you would have, say, 5 to 10 trials per person per situation (before and after), and then do a matched t test to see if there is a significant difference in the times (and individuals) between the two situations. You then either accept the null hypothesis that video games did not make a statistically significant difference in reaction times, or you reject the null hypothesis and say that video games appear to have an impact.

The control are the people’s data before the video game session.

Nice Guys Finish First (2/5) – Richard Dawkins

Do you want to learn how to make a barometer? How to make a barometer science experiment is a Middle School Science Labs experiment which means it is more involved than a regular Fun Kid Experiment.

Learning how to make a barometer can be very rewarding. By learning how to make a barometer, you will learn much about air Pressure as well as walking out of a middle school science lab with a working barometer for yourself as a souvenir.

Before we show you how to make a barometer, let’s examine what a barometer is and how does a barometer work.

What are barometers? How does a barometer work?

Barometers measure air Pressure and provide information about changing weather pattern. A high Pressure system barometer usually indicates fair weather without precipitation and a low Pressure system suggests warmer clothing and possible precipitation. The date you collect from a barometer may be the first warning of cooler temperatures, increased wind and precipitation to come.

What you need to make a barometer

In learning how to make a barometer, you will need:

• medium glass jar with small mouth
• Balloon
• Drinking straw
• 4 pieces of graph paper
• Rubber cement
• Red marker with narrow point

How to make a barometer step – by – step

To make a barometer, follow the steps below:

• Flatten the straw 1 inch (2.5 cm) from the end.
• Cut diagonally from the corner of the flattened end to create a sharp, quill-like point.
• color the tip with a red marker.
• Cut the balloon in half and stretch the balloon across the jar’s mouth, securing it with a rubber band to create a tight, drumlike surface.
• Apply a strip of rubber cement along the stretched balloon from the center of the bottle’s mouth to the edge and carefully place the unflattened end of the straw there, holding it in place until the glue dries.
• The straw should stick out about 6 inches (15 cm) perpendicularly from the bottle.