Question

Jamila has written down a number of ideas for investigations about sound. Choose the best idea from the list. Tick ONE, considering these conditions:
A good investigation description should include:
What is being changed.
What is being measured.
A clear hypothesis (an idea about how the variable being changed affects what is being measured).
An idea that is possible to test easily.

List of Jamila’s ideas (Tick one):

____ Do objects produce sounds underwater?
____ The size of a musical instrument affects whether or not I can hear it.
____ The speed of the wind affects which sounds I can hear outside.
____ Whether or not a sound travels through an object depends on the material the object is made from.

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Answer 1

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Explicación: