Q: When a balloon is rubbed against hair, they attract each other because of a difference in what? Read this paragraph and choose the correct option from the provided answers: Did you ever rub an inflated balloon against your hair? You can see what happens in Figure below . Friction between the rubber of the balloon and the baby's hair results in electrons from the hair "rubbing off" onto the balloon. That's because rubber attracts electrons more strongly than hair does. After the transfer of electrons, the balloon becomes negatively charged and the hair becomes positively charged. As a result, the individual hairs repel each other and the balloon and the hair attract each other. Electrons are transferred in this way whenever there is friction between materials that differ in their ability to give up or accept electrons. Choices: - Force - Friction - actions - charges A:
charges

(Question)
Q: What are the two types of vascular tissues? Read this paragraph and choose the correct option from the provided answers: Vascular tissue runs through the ground tissue inside a plant. It transports fluids throughout the plant. Vascular tissue actually consists of two types of tissues, called xylem and phloem. The two types of vascular tissue are packaged together in bundles. You can see them in the celery in Figure below . Choices: - ectoderm and phloem - epidermis and phloem - ganglia and phloem - xylem and phloem A:
(Answer)
xylem and phloem

Ques: Q: Fertilizer runoff can create what type of zones in the ocean? Read this paragraph and choose the correct option from the provided answers: Fertilizer runoff can create dead zones in the ocean. Choices: - fresh zones - barren zones - hot zones - dead zones A:
Ans: dead zones

(Q).
Q: What is most often the cause of encephalitis? Read this paragraph and choose the correct option from the provided answers: Encephalitis is a brain infection most often caused by viruses. The immune system tries to fight off a brain infection, just as it tries to fight off other infections. But sometimes this can do more harm than good. The immune system's response may cause swelling in the brain. With no room to expand, the brain pushes against the skull. This may injure the brain and even cause death. Medicines can help fight some viral infections of the brain, but not all infections. Choices: - parasites - bacterial infections - calcium buildup - viruses A:
(A).
viruses

Ques:Q: When heat flows into an object, its thermal energy increases and so does its what? Read this paragraph and choose the correct option from the provided answers: When heat flows into an object, its thermal energy increases and so does its temperature. Choices: - matter - speed - color - temperature A:

Ans:temperature

Question: Q: What is the term for the affected factor in an experiment? Read this paragraph and choose the correct option from the provided answers: Test the hypothesis. Make predictions based on the hypothesis and then determine if they are correct. This may involve carrying out an experiment. An experiment is a controlled scientific test that often takes place in a lab. It investigates the effects of one factor, called the independent variable , on another factor, called the dependent variable . Experimental controls are other factors that might affect the dependent variable. Controls are kept constant so they will not affect the results of the experiment. Choices: - multiple variable - stable variable - independent variable - dependent variable A:
Answer:
dependent variable