Boiling mud pools

Question 1

Boiling mud pools are another type of ___ ______

Answer 1

hot spring

Question 2

They form in areas with very ____ grained soil and the hot spring water _____ with the soil to create a hot muddy pool.

Answer 2

fine mixes

Question 3

The pools sometimes contain brightly coloured mud because of ________ deposited by hot water. For example ____ and _______ rich ________ can create purple orange and yellow colours.

Answer 3

minerals iron and sulpher rich minreals

Question 4

Boiling mud pools can be found all over the world, for example in ___________ National Park and _______.

Answer 4

Yellowstone Iceland