Science 4th grade | UNIT 4: Sound 4.4 Loud and soft sounds
Look at the picture. Do you think the sound is loud or soft? What makes the sound louder?
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Activity 4.4a (Listening to sound through a tube)
You will need: a long cardboard tube - a source of sound
Look at the pictures. Copy what the children in the pictures are doing.
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Question
1) Was the sound of the clock louder or softer when you moved the clock further from your ear? Why do you think that this happened?
Use the words vibrations, travel and air in your answer.
2) Was the sound louder through the tube? Why do you think that this happened?
Activity 4.4b (Planning a fair test for loud and soft sounds)
Think of a question about loud and soft sounds.
Plan a fair test to find the answer to your question using everyday materials.
In your plan, list the materials you would use and the steps you would take.
Explain how you would make it a fair test.
Suggest how you would present your results.
Question
1) Look at the picture. How do you think the music was made louder?
