Answer the following question given this paragraph: Fermat's Principle states that light will always take the path of least amount of time (not distance). This principle governs the paths light will take and explains the familiar phenomena of reflection, refraction, lenses and diffraction. Light rarely travels in a straight-line path. When photons interact with electrons in matter the time it takes for this interaction determines the path. For example, higher frequency blue light is refracted more than red because blue wavelengths interacts more frequently with electrons than red wavelengths and the path of least time is for blue to bend more then red in order to get out of this 'slow' area faster. The rainbows we see are a result of this. Fermat's Principle explains the many fascinating phenomena of light from rainbows to sunsets to the haloes around the moon. Q: Fermat's principle states that light will always take the path of least amount of? Choices: - energy - momentum - resistance - time A:
time
(Question)
Answer the following question given this paragraph: Red algae are a very large group of protists making up about 5,0006,000 species. They are mostly multicellular and live in the ocean. Many red algae are seaweeds and help create coral reefs. Q: Where do most red algae species live? Choices: - rivers - lakes - seas - oceans A:
(Answer)
oceans
Ques: Answer the following question given this paragraph: Cerebral palsy is a disease caused by injury to the developing brain. The injury occurs before, during, or shortly after birth. Cerebral palsy is more common in babies that have a low weight at birth. But the cause of the brain injury is not often known. The disease usually affects the parts of the brain that control body movements. Symptoms range from weak muscles in mild cases to trouble walking and talking in more severe cases. There is no known cure for cerebral palsy. Q: Cerebral palsy is a disease caused by injury to what organ as it is developing? Choices: - heart - skin - liver - brain A:
Ans: brain
(Q).
Answer the following question given this paragraph: Catalysts are not reactants, but they help reactants come together so they can react. You can see one way this happens in the animation at the URL below. By helping reactants come together, a catalyst decreases the activation energy needed to start a chemical reaction. This speeds up the reaction. Q: A catalyst decreases the amount of what resource that is required in order to begin a chemical reaction? Choices: - positive energy - motion energy - kinetic energy - activation energy A:
(A).
activation energy
Ques:Answer the following question given this paragraph: The simplest way to define a base is an ionic compound that produces hydroxide ions when dissolved in water. One of the most commonly used bases is sodium hydroxide, illustrated below. Q: The simplest way to define a base is which kind of compound that produces hydroxide ions when dissolved in water? Choices: - magnetic - solvent - covalent - ionic A:

Ans:ionic
Answer the following question given this paragraph: Mariana Ruiz Villarreal (User:LadyofHats/Wikimedia Commons), modified by Hana Zavadska. The sodium-potassium pump uses active transport . Public Domain. Q: Unlike the passive form, the sodium-potassium pump uses what type of transport? Choices: - High - Low - phase - active A:
active