Answer the following question given this paragraph: Conservation of charge is the fourth of the five conservation laws in physics. There are two charges, positive and negative, and the conservation of electric charge indicates that the total charge in the universe remains the same. In any closed system charge can be transferred from one body to another or can move within the system but the total electric charge remains constant. Q: What are the two types of charges? Choices: - ions and neutrons - energy and mass - volume and acceleration - positive and negative A:
positive and negative
(Question)
Answer the following question given this paragraph: Q: What is required between cytoskeleton and motor proteins for cell motility? Choices: - absorption - translation - inhibition - interaction A:
(Answer)
interaction
Ques: Answer the following question given this paragraph: Seismic waves show that the outer core is liquid. The inner core is solid. Q: What do seismic waves prove about the inner core? Choices: - it is liquid - it is hot - it is layered - it is solid A:
Ans: it is solid
(Q).
Answer the following question given this paragraph: A machine is any device that makes work easier by changing a force. When you use a machine, you apply force to the machine. This force is called the input force. The machine, in turn, applies force to an object. This force is called the output force. Recall that work equals force multiplied by distance:. Q: A machine is any device that makes work easier by doing what? Choices: - moving things - changing molecules - removing barriers - changing a force A:
(A).
changing a force
Ques:Answer the following question given this paragraph: To harness water power, a stream must be dammed. Narrow valleys are the best for dams. While sitting in the reservoir behind the dam, the water has potential energy. Water is allowed to flow downhill into a large turbine. While flowing downhill, the water has kinetic energy. Kinetic energy makes the turbine spin. The turbine is connected to a generator, which makes electricity. Q: Water is allowed to flow downhill into a large turbine to harness power. what helps the turbine spin? Choices: - residual energy - electrostatic energy - polar energy - kinetic energy A:

Ans:kinetic energy
Question: Answer the following question given this paragraph: In some soils, the organic portion is entirely missing. This is true of desert sand. At the other extreme, a soil may be completely organic. Peat, found in a bog or swamp, is totally organic soil. Organic materials are necessary for a soil to be fertile. The organic portion provides the nutrients needed for strong plant growth. Q: Will contour lines ever cross? Choices: - yes - in rare cases - always - no A:
Answer:
no