Question: Answer the following question given this paragraph: Refraction The changing of a light ray's direction (loosely called bending) when it passes through variations in matter is called refraction. Speed of Light The speed of light c not only affects refraction, it is one of the central concepts of Einstein's theory of relativity. As the accuracy of the measurements of the speed of light were improved, c was found not to depend on the velocity of the source or the observer. However, the speed of light does vary in a precise manner with the material it traverses. These facts have far-reaching implications, as we will see in Special Relativity. It makes connections between space and time and alters our expectations that all observers measure the same time for the same event, for example. The speed of light is so important that its value in a vacuum is one of the most fundamental constants in nature as well as being one of the four fundamental SI units. Q: The changing of a light ray's direction (loosely called bending) when it passes through variations in matter is called this? A:
OPTIONS:
- wavelength
- resonance
- vibration
- refraction
Answer: refraction

input with options: Answer the following question given this paragraph: When an earthquake will occur is much more difficult to predict. Stress on a fault builds up at the same rate over time. So earthquakes should occur at regular intervals. But, so far, scientists cannot predict when quakes will occur even to within a few years. Around Parkfield, California, an earthquake of magnitude 6.0 or higher occurs about every 22 years. So seismologists predicted that one would strike in 1993. But that quake came in 200411 years late ( Figure below ). Q: Stress building up at the same rate over time at a fault causes what phenomenon? A:
OPTIONS:
- erosion
- volcanoes
- storms
- earthquakes
output: earthquakes

Q: Answer the following question given this paragraph: Pressure Relationships Inspiration (or inhalation) and expiration (or exhalation) are dependent on the differences in pressure between the atmosphere and the lungs. In a gas, pressure is a force created by the movement of gas molecules that are confined. For example, a certain number of gas molecules in a two-liter container has more room than the same number of gas molecules. Q: Pressure relationships inspiration (or inhalation) and expiration (or exhalation) are dependent on the differences in pressure between the atmosphere and these? A:

OPTIONS:
- salts
- enzymes
- bones
- lungs

A: lungs

input: OPTIONS:
- calcium
- dioxide
- oxygen
- acid Now, answer this question: Answer the following question given this paragraph: An element is a substance that cannot be broken down into chemically simpler components. Compounds can be broken down into simpler substances. Q: Limestone is insoluble in water, so what can dissolve it? A:
A:
output: acid

Answer the following question given this paragraph: The image below shows the way in which a blocked coronary artery can cause a heart attack. The loss of oxygen to the heart muscle cause that part of the tissue to die. Maybe one day, stem cell therapy will allow for the replacement of the dead cells with new cardiac muscle cells. Q: The loss of oxygen to the heart muscle causes that part of the tissue to what? A:

OPTIONS:
- beat harder
- thrive
- beat erratically
- die

Answer: die

Q: Answer the following question given this paragraph: Further away from the heart, the aorta branches into smaller arteries, which eventually branch into capillaries. Capillaries are the smallest type of blood vessel; they connect very small arteries and veins. Gases and other substances are exchanged between cells and the blood across the very thin walls of capillaries. Q: What are the smallest type of blood vessel? A:

OPTIONS:
- varicose veins
- spider veins
- arteries
- capillaries

A:
capillaries