Light and Refraction
What does the term "refraction" mean?
The process by which light bends when it enters a new substance.
What did Galen examine to learn more about human body structure?
Apes (or animals).
When two muscles do opposite things to move something in the body, what do we call them?
Antagonistic muscles.
Which refracts light more strongly: oil or water?
Oil.
What type of substance is transported by arteries and veins?
Blood.
Name the four organs that are used to produce a voluntary motion of the legs?
Brain, spinal cord, nerves, and muscles
In which material does light move fastest: air, water, or oil?
Air.
What is a doctor measuring when he takes a patient's pulse rate?
How quickly the blood is flowing through the body.
Which of these organs are NOT involved in automatic body motions: muscles, brain, nerves, and spinal cord?
Brain
What name is given to body parts (such as the heart, stomach, or skin) that perform unique actions?
Organs.
How does your pulse rate when you are young compare to your pulse rate when you are old?
It is faster when you are young. (It is slower when you are older)
Boëthius said that sound should be thought of as...
Ripples of water
Which of these would slow down the speed of light the most: oil, water, or air?
Oil.
What do we call the tissues that connect skeletal muscles to the bones of the skeleton?
Tendons.
How did Boëthius's view of sound explain why sounds get softer the farther away they are made, but their pitch doesn't change based on their distance?
As a ripple spreads out, the size of the waves get smaller, but the distance between them doesn't change. The number of waves that hit a specific place every second doesn't change, (the frequency doesn't change), they're just smaller waves. The size of a sound wave affects volume, however, so sounds get softer the farther away they are made.