Physical Science
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1st Grade Science › Physical Science
Vibrating materials make a sound. What can we change about a sound by making it vibrate differently?
The volume and pitch.
How good or bad it sounds.
The sound cannot be changed.
Explanation
We can change the volume or pitch of something when we change the way it vibrates. Volume is how loud or soft something sounds and pitch is how high or low the sound is. By making something vibrate more or less, faster or slower, we can change the way it sounds.
Where does sound come from?
Human-made and natural sources
Far away in our solar system
Only natural sources
Only human-made sources
Explanation
Sound comes from human-made and natural sources. An example of a human-made source would be a radio. An example of a natural source of sound would be a waterfall. The sound travels to our ears the same if it is human-made or natural.
Which investigation provides evidence relating to sound and vibrations?
Investigation 1: Jack hits a tuning fork on a desk and watches it move back and forth and hears a noise when he moves close. Jack observes a still tuning fork and hears nothing.
Investigation 2: Amber feels rumbling and hears growling in her stomach so she eats mac and cheese for lunch.
Investigation 1
Investigation 2
Neither investigation
Explanation
Investigation 1 provides evidence that there is a relationship between sound and vibrations. The tuning fork is moving back and forth (vibrating) and a sound was made. Jack is able to see the vibrations and then hear a notice when he makes his observations. This shows a link between sound and vibration.
Vibrating materials make a sound. What can we change about a sound by making it vibrate differently?
The volume and pitch.
How good or bad it sounds.
The sound cannot be changed.
Explanation
We can change the volume or pitch of something when we change the way it vibrates. Volume is how loud or soft something sounds and pitch is how high or low the sound is. By making something vibrate more or less, faster or slower, we can change the way it sounds.
A light wave can be used to send messages.
True
False
Explanation
This is a true statement. Light is used to communicate and send messages every day. Everyday crosswalk signs, lighthouses, traffic lights, and so many more help to send messages to people all around. Light is made of waves, and we can use these waves to keep people safe and pass information.
Which statement best explains why fireworks help us to see at night?
Fireworks help us see at night because they are a source of light. They illuminate the sky and other objects.
Fireworks help us see at night because they are beautiful and colorful. Things that are pretty are easy to see.
Fireworks help us see at night because they absorb light from other things.
Explanation
Humans can only see objects when they are illuminated by something that gives off or produces light. Fireworks do both of these things, so they help to light up the night sky and other objects around them. While waiting for a firework show, you may notice it is dark and hard to see the people around you; when the fireworks explode, you can see the people around you more clearly.
What can Mel conclude about how light affects different objects based on the data above?
Some objects stop all light; some allow it all to pass through; others stop some light.
All objects are affected the same by light. There is no difference between different objects or materials.
Light can either pass through an object or be stopped entirely. There is no in-between.
Explanation
Based on the data given can conclude that some materials are transparent and let all light pass through. Some materials stop some light from passing through. Some materials are solid and block or reflect all light. A beam of light will have a different effect on an object based on that object's characteristics.
Which object makes its own light?
A glow stick
A dog
A soda can
Explanation
A glow stick produces its own light. You can use a glow stick to illuminate a small dark area or to make yourself more easily seen at night time. Glow sticks make their own light when two chemicals are mixed after snapping or shaking the stick.
Vibrating materials make a sound. What can we change about a sound by making it vibrate differently?
The volume and pitch.
How good or bad it sounds.
The sound cannot be changed.
Explanation
We can change the volume or pitch of something when we change the way it vibrates. Volume is how loud or soft something sounds and pitch is how high or low the sound is. By making something vibrate more or less, faster or slower, we can change the way it sounds.
What can Mel conclude about how light affects different objects based on the data above?
Some objects stop all light; some allow it all to pass through; others stop some light.
All objects are affected the same by light. There is no difference between different objects or materials.
Light can either pass through an object or be stopped entirely. There is no in-between.
Explanation
Based on the data given can conclude that some materials are transparent and let all light pass through. Some materials stop some light from passing through. Some materials are solid and block or reflect all light. A beam of light will have a different effect on an object based on that object's characteristics.