how to make a volcano - science fair experiments for kids
½ cup vinegar
3 tbsp. baking soda
Clay / Garden soil
Red food colouring
¼ cup liquid detergent
the children to build a small hillock using clay or soil from
can be used to decorate it.
out mud from the peak of the hill to form a crater where the
jar can fit in.
baking soda in the jar.
the jar in the space made at the top of the hill.
together water, liquid detergent, vinegar & some red colouring.
the mixture into the jar.
and lava will start pouring out.
are miniature gardens enclosed in glass. They require a minimum
of care as the moisture that the plants absorb from the soil is
given off through the leaves by the process of transpiration. This
condenses on the glass walls and runs down to moisten the soil again.
A well-constructed terrarium requires only light and warmth to flourish.
Container - any clear glass or plastic container can be used, if
it will admit light and allow the plants to be seen. Fish tanks,
fish bowls, pickle jars, bottles all make attractive displays. If
they do not come equipped with a lid, a sheet of clear plastic or
glass makes a suitable cover. Cling film can also be used. The neck
of the container should be big enough for you to be able to put
the plant inside.
Plants - Most plants recommended for terrariums are moisture-loving
types which never become large. Apart from cacti and succulents,
almost all house plants are suitable. Choose plants with similar
requirements for temperature, light and water.
Red sand (bajri)
Peat mixture (potting soil)
Lid or cling film
and dry the gravel, charcoal and red sand.
a funnel with the paper and pour in the gravel. If you wish
to add a landscape effect, make hills and valleys with the gravel.
a layer of charcoal
last layer would be of peat.
the plants carefully into the container. Press the roots into
¼ cup of water all over the terrarium.
the container with a lid or cling film.
Peat mixture is easily available at nurseries.
the terrarium in a well lit area but never in direct sun. Add ¼
cup water once a month.
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