Science MCQs
Practice multiple choice questions with instant feedback. Select an option to see if you're correct.
A smoke detector produces sound to:
Sound waves with frequencies above 20000 Hz are called:
Doctors use ultrasound to:
Sound waves cannot travel through a:
When sound waves move from air to water, their speed:
What happens to the pitch when the frequency of a sound increases?
What is the relationship between amplitude and energy of a sound wave?
Which factor does NOT affect the speed of sound in a medium?
Why can a dog hear a dog whistle but a boy cannot?
What is the purpose of the activity with glasses and water?
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Practice Makes Perfect
Regular practice with MCQs can improve your test-taking speed and accuracy by up to 40%.
Active Recall
MCQs engage active recall, which is 50% more effective for long-term memory than passive reading.