Energy and Motion
The ability to make an object move or change
Energy
What is energy we can see?
Light
Opaque objects...
Allow no light to pass through it
Energy that we can hear is called... How does this energy travel?
Sound. Outward in all directions
Loudness or softness of a sound is...
Volume
A push or pull
Force
A lens that is thicker at the edges and make images appear smaller are..
Concave lens
Transparent objects...
Allow all light to pass through it
A material that allows sound to travel easily is...
Conductor
Highness or lowness of a sound is...
Pitch
How is a spring scale used to measure force and motion?
To measure the mass of an object
When light hits a surface it can... (3 Answers!)
Reflect, refract or be absorbed
Translucent objects...
Allow some light to pass through it
A material that absorbs sound easily is...
The reflection of sound is...
Echo
How is a ruler/measuring tape used to measure force and motion? How is a stopwatch/timer used to measure force and motion?
Measure distance and time.
A lens that is thicker in the middle and makes objects appear larger...
Convex Lens
Why does a stop sign appear red?
Red is being reflected and all other colors are being absorbed
Sound must have a _____ in order to travel.
Medium
Would a long or short string have a higher pitch and why?
Short string because it has a faster vibration
What 3 things can happen to an object that is in motion? (3 Answers!)
Keep going in same direction, go in opposite direction or completely stop and not move anymore
What happens when light is refracted? When light is reflected? When light is absorbed?
Light bends when it hits another substance, light bounces off of an object, and light is taken in.
What are the 7 different colors that white light can be separated into? What are the seven colors called?
Red, orange, yellow, green, blue, indigo and violet (ROYGBIV). Visible light spectrum
Number of vibrations of sound per second is...
Frequency
The faster an object vibrates the _____ the pitch and frequency. The slower an object vibrates the _____ the pitch and frequency.
Higher and lower