Q: Answer the following question given this paragraph: Power may be measured in a unit called the horsepower. One horsepower is the amount of work a horse can do in 1 minute, which equals 745 watts of power. Q: What unit of measure is equal to the amount of work a horse can do in 1 minute? A:

OPTIONS:
- joule
- watt
- torque
- horsepower

A: horsepower

input: OPTIONS:
- color
- mass
- weight
- steepness Now, answer this question: Answer the following question given this paragraph: A: Variables might include factors relating to the ramp or to the object. An example of a variable relating to the ramp is its steepness. An example of a variable relating to the object is the way it movesit might roll or slide down the ramp. Either of these variables could be manipulated by the researcher, so you could choose one of them for your manipulated variable. Q: An example of a variable relating to the ramp is its what? A:
A:
output: steepness

Answer the following question given this paragraph: Calculating acceleration is complicated if both speed and direction are changing. It's easier to calculate acceleration when only speed is changing. To calculate acceleration without a change in direction, you just divide the change in velocity (represented by ) by the change in time (represented by ). The formula for acceleration in this case is:. Q: To calculate acceleration without a change in direction, you just divide the change in velocity by the change in what? A:

OPTIONS:
- weight
- height
- size
- time

Answer: time

Problem: OPTIONS:
- Reaction
- Combination
- Dissolvant
- solution
Q: Answer the following question given this paragraph: A solution is a homogeneous mixture in which a solute dissolves in a solvent. Water is a very common solvent, especially in organisms. Q: What is the general name for the homogeneous mixture that is formed when a solute dissolves in a solvent? A:
Answer: solution

Problem:OPTIONS:
- decay rate
- exponential decay
- radioactive decay
- half-life

Answer the following question given this paragraph: The decay of an unstable isotope to a stable element occurs at a constant rate. This rate is different for each isotope pair. The decay rate is measured in a unit called the half-life. The half-life is the time it takes for half of a given amount of an isotope to decay. For example, the half-life of carbon-14 is 5730 years. Imagine that you start out with 100 grams of carbon-14. In 5730 years, half of it decays. This leaves 50 grams of carbon-14. Over the next 5730 years, half of the remaining amount will decay. Now there are 25 grams of carbon-14. How many grams will there be in another 5730 years? Figure below graphs the rate of decay of carbon-14. Q: The decay rate is measured in a unit called the what? A:
****
A: half-life

Problem:OPTIONS:
- convection
- oxidation
- catalytic conversion
- combustion reaction

Answer the following question given this paragraph: A combustion reaction occurs when a substance reacts quickly with oxygen (O 2 ). You can see an example of a combustion reaction in Figure below . Combustion is commonly called burning. The substance that burns is usually referred to as fuel. The products of a combustion reaction include carbon dioxide (CO 2 ) and water (H 2 O). The reaction typically gives off heat and light as well. The general equation for a combustion reaction can be represented by:. Q: What occurs when a substance reacts quickly with oxygen? A:
****
A:
combustion reaction