1st Grade Science : Physical Science
Study concepts, example questions & explanations for 1st Grade Science
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Example Questions
Example Question #21 : Sound And Vibration
Students place their hands on the front of their throat. The teacher asks them to hum softly and write down what they feel. The teacher asks them to hum louder and write down what they feel. The teacher asks them to be silent and write down what they feel.
Why was there no humming sound when there was no vibration?
The student was not trying hard enough.
There is no way to tell why there was no humming.
The material must vibrate to make a sound.
The material must vibrate to make a sound.
When materials (including our vocal cords) vibrate, a sound is produced. When the students hum, there is a vibration; when there is no sound, there is no vibration. For sound waves to be produced, the material has to vibrate.
Example Question #2 : Investigate How Vibrating Material Makes Sound
Students are told to make sounds in class. They stomp their feet, whistle, clap, and snap their fingers.
What do all these sounds have in common?
Something is moving before or during the sound.
The students are having fun making the sounds.
The students are still before or during the sound.
Something is moving before or during the sound.
All of these sounds have movement in common. Something is moving before or during the sound so cause it to happen. Vibrations from clapping or whistling create the sound waves that carry the noise we hear to our ears.
Example Question #9 : Investigate How Vibrating Material Makes Sound
Place a ruler on the edge of a desk, so that eight inches of it hangs over the side. Place one hand on the four inches that remain on the desk to hold the ruler securely. With your other hand, whack the end of the ruler that is hanging off of the desk. The ruler will vibrate up and down.
What will be produced because of the vibrations?
Strong winds will be produced.
A sound will be produced.
Nothing will be produced.
A sound will be produced.
Sounds will be produced because of the vibrations from the ruler. When the ruler is whacked and vibrates up and down, sound waves are created, and noise will be heard.
Example Question #10 : Investigate How Vibrating Material Makes Sound
What is the definition of sound?
What you see when your eyes focus on a picture or image
What you hear when vibrations happen and sound waves travel to your ear
What you taste when you eat something sweet or sour
What you hear when vibrations happen and sound waves travel to your ear
Sound is what you hear when vibrations create sound waves and they travel to your ear to be processed. When vibrations happen sound is created.
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