Science Experiments

Archive for April, 2009

Question: Why will hot water cool down quicker when you have a large surface area?

I’ve been doing a science experiment using different sized beakers, and the biggest beaker with the hot water in cooled down the quickest because it had more surface area than the other beakers and I would like to know why?

Thanks x

Answer: large surface area means more exposure to colder air, therefore makes it cool faster.

Water Balloon in a Bottle – Cool Science Experiment

Question: Need fast help with a Volcano experiment ten points!?

Me and my friend have to do the volcano experiment for a science fair. We already tried lots of mixes but they wont explode over the top. All that happens is the bottle fizzes up. We need a mix that will explode without having to shake it or stir it. we already tried baking soda, vinegar, dish soap, warm water, and food colouring. Please help!

Answer: Baking soda, Vinegar etc are things of the past, though its safe. I am not sure if you can lay your hands on a chemical called Ammonium Dichromate, which when burnt produces a dazzling volcano. It has been used in classes as well for demonstration. Try this link…

http://www.practicalchemistry.org/experiments/ammonium-dichromate-volcano,56,EX.html

Fun Science Experiments : How to Blow Up a Balloon With Baking Soda & Vinegar

Question: Where can I find homework help?

I have read a lot of thoughts on how much homework is appropriate for a 4th grade. From the sounds of it we are right on track 1-1.5 hrs a night. I think it’s it ridiculous but it is what it is. Unfortunately I have trouble helping him with his homework at times because I need a refresher myself. Is there any good homework help online for 4th graders for free?

Answer: A HOMEWORK HELP.

I think all subjects are covered, good luck & don’t lose em..!!!

This site has everything..!!! Perfect for A P American History.
American History:

http://www.historyteacher.net/AHAP/AHAPCourseMainPage.htm

A P European History Topics and Web Links Page.

http://www.historyteacher.net/APEuroCourse/EHAPTOpics_WebLinksPage.htm

Online Study Guides & Book Reviews.

These links will give you a summary of the book, character analysis, plot and much more, so that you will be able to answer literary questions.

http://education.yahoo.com/homework_help/cliffsnotes/all.html

http://www.gradesaver.com/

http://summarycentral.tripod.com/

http://www.antistudy.com/

http://www.cummingsstudyguides.net/

http://www.freebooknotes.com/

http://sparknotes.com/

MATH, ACTIVITIES and FUN.

http://mathforum.org/dr.math/

Kindergarten to 8th Grade Interactive Sites

http://www.internet4classrooms.com/skills_4th.htm

MATH WEBSITES FOR TEACHERS AND STUDENTS

http://www.cumbavac.org/Math.htm

How to Write a Book Review

These links are essentially the same, just choose the one that makes the most sense to you..!!!

The book report you write should be four paragraphs long. Remember to use correct conventions (margins, indent paragraphs, capitalization, punctuation etc.)

http://www.kyrene.k12.az.us/staff/gmeade/how_to_write_a_book_report.htm

http://www.ehow.com/how_11249_write-book-report.html

How to Write a Book Report (Middle and High School level.)

http://www.infoplease.com/homework/wsbookreporths.html

http://homeworktips.about.com/od/writingabookreport/a/report.htm

Basic Structure

http://members.tripod.com/~lklivingston/essay/

WEB SITES ON INVENTORS AND INVENTIONS

http://www.cumbavac.org/Inventors_and_Inventions.htm

Encyclopedias.

http://aip.completeplanet.com/

http://edtech.kennesaw.edu/web/3-5.htm

http://www.nationalgeographic.com/

Countries, Facts & Figures.

https://www.cia.gov/cia/publications/factbook/index.html

http://education.yahoo.com/reference/factbook/;_ylt=AjgPIHeVuFG24KzyHBaLfaBeCc0F

Human Anatomy and Physiology Web Sites

http://www.geocities.com/Athens/Forum/6100/1hap.html

http://www.infovisual.info/03/pano_en.html

Skeleton

http://www.infovisual.info/03/011_en.html

http://www.infovisual.info/03/012_en.html

Way Cool Experiments

http://www.hunkinsexperiments.com/

http://maura.setonhill.edu/~msct/chemclub/reactions.html

http://site.ecfs.org/baglio/stories/storyReader$253

http://www.science-house.org/learn/CountertopChem/index.html

Periodic Table of the Elements

http://www.lenntech.com/periodic-chart.htm

http://www.chemicalelements.com/index.html

Homework Helpers

http://education.jlab.org/indexpages/index.html

Biology Help

PLANT AND ANIMAL CELL MODELS

http://www.kathimitchell.com/cells.html

http://www.infovisual.info/03/001_en.html

http://www.infovisual.info/01/014_en.html

Biodiversity for Kids

http://www.kathimitchell.com/biodiver.htm

http://www.worldwildlife.org/fun/index.cfm

http://www.rainforestweb.org/Rainforest_Information/Sites_for_Kids/

http://www.kids.gov/k_states.htm

http://www.askforkids.com/web?q=biodiversity

Teachers’ kit – Biodiversity for kids

http://www.nationalparks.nsw.gov.au/npws.nsf/Content/Teachers_kit_biodiversity

http://www.greenworks.tv/kids/

Endangered Species

From our start in 1961, WWF has worked to protect endangered species. We’re ensuring that the world our children inherit will be home to elephants, tigers, giant pandas, whales and other wildlife species, as well as people.

http://www.worldwildlife.org/endangered/index.cfm

http://bagheera.com/

WEB SITES ON DINOSAURS & FOSSILS

http://www.cumbavac.org/Dinosaurs.htm

http://www.nmnh.si.edu/paleo/dinosaurs/

http://www.ala.org/gwstemplate.cfm?section=greatwebsites&template=/cfapps/gws/displaysection.cfm&sec=2

http://www.enchantedlearning.com/subjects/dinosaurs/

Zoom Dinosaurs is a comprehensive on-line hypertext book about dinosaurs. It is designed for students of all ages and levels of comprehension. It has an easy-to-use structure that allows readers to start at a basic level on each topic, and then to progress to much more advanced information as desired, simply by clicking on links.

http://www.dinosauria.com/

http://edtech.kennesaw.edu/web/dinopage.html

Good luck.
Kevin, Liverpool, England.

Innovation Survival: Innovation in Science