Science 4 Underground Farmers

Science 4

Underground Farmers

pgs 50 and 51

​worms' castings

Multiple Choice

Why are worm castings called black gold?

• Gold can also be used as a fertilizer for plants.

• They are found in the same place gold is.

• They cost the same amount per ounce as gold does.

• They very useful and valuable as fertilizer for plants.

​glass jar and soil

​dead leaves and grass clippings

​black cloth and spray bottle

Multiple Choice

If you don't put a black cloth over the wormery, the worms will stay hidden in the center of the jar and you won't be able to see them. Why do you think this is?

• They will think it is nighttime.

• They are used to living underground and are sensitive to light.

• The bright light will hurt their eyes.

• The worms will be too scared to come out where they can be seen.

Multiple Select

What are two good things that earthworms do for the soil?

• Their castings give plants the nutrients they need.

• They eat the roots of plants and they die.

• They make tunnels in the soil that make easier for water and air to get in.

• They eat all the nutrients plants need.

Multiple Select

What do the worms in the wormery eat?

• grass clippings

• hamburguers

• dead leaves

• fresh leaves