NEW ZEALAND TARANAKI

Home

Home page

About Us

Michael & Christine

Student Achievement

SEARCH / index

Students/Parents

FUN! Science expts

Science Fair ideas

Gifted Children

Downloads

Careers Advice

Giving public talks

Professional posters

Teachers

Resources

eLearning /ICT ideas

Gifted Children

Microbiology

NCEA and Science

Nature of Science - what it looks like

Popular pages

CSI Forensics

Game Design

Dr Who Dalek

Robotics / PICAXE

Technical equipment

Products

Research outputs

Workshops/Courses

Publications/Papers

Associated Bodies

RSNZ

WITT

NZMS

Website Awards

Read comments

Stalagmites and Stalactites

One sticks up from the cave floor, the other hangs down from the ceiling...but which is which!

Try this:

  • 1/2 fill two 250 mL beakers with saturated sodium bicarbonate solution.
  • Run a wet piece of string from one beaker into the other and allow the string to sag a little in the middle.
  • Leave overnight.

 

You will find that the bicarb has saturated the string and dripped from the sagging portion onto the bench forming a recognisable geological formation!

FIND OUT MORE:-

  1. Find out if there are any local caves you could visit. Been to Waitomo to see the Glow Worms?
  2. How do the stalagmites and stalactites form in caves?
  3. What kinds of creatures can you find living in caves?
  4. Investigate using other saturated solutions to grow a crystal garden, watch crsytals under a microsocope
 

up arrowback to top  

Home | Search | About Us | Science Fair | Technical data | Microbiology | Games Design | Robotics / Electronics | e-Learning ICT | Downloads | Gifted children | Teachers resources | Courses / workshops | Publications / papers

        All rights reserved