Q: What do cyclotrons use to cause particles to move in circular orbits? Read this paragraph and choose the correct option from the provided answers: Figure 33.8 Cyclotrons use a magnetic field to cause particles to move in circular orbits. As the particles pass between the plates of the Ds, the voltage across the gap is oscillated to accelerate them twice in each orbit. Choices: - layers field - occurs field - mixed field - magnetic field A:
magnetic field

Q: Clouds are formed from what? Read this paragraph and choose the correct option from the provided answers: Rising air currents carry water vapor into the atmosphere. As the water vapor rises in the atmosphere, it cools and condenses. Condensation is the process in which water vapor changes to tiny droplets of liquid water. The water droplets may form clouds. If the droplets get big enough, they fall as precipitation. Choices: - ice crystals - snow flakes - dust particles - water droplets A:
water droplets

Q: Q: In an endothermic reaction, what is absorbed by the reaction? Read this paragraph and choose the correct option from the provided answers: Because energy is a product, energy is given off by the reaction. Therefore, this reaction is exothermic. Because energy is a reactant, energy is absorbed by the reaction. Therefore, this reaction is endothermic. Choices: - food - fuel - atoms - energy A:
A: energy

Question: Q: What structure connects the fetus to the placenta, allowing the exchange of gases? Read this paragraph and choose the correct option from the provided answers: Within seconds of birth, the umbilical cord is cut. Without this connection to the placenta, the baby can't exchange gases, so carbon dioxide quickly builds up in the baby's blood. This stimulates the baby's brain to trigger breathing, and the newborn takes her first breath. Choices: - sediment cord - skin cord - belly button - umbilical cord A:
Answer: umbilical cord

*Question*
Q: What do you call compounds that have covalent bonds? Read this paragraph and choose the correct option from the provided answers: Covalent bonds are bonds in which atoms share rather than transfer electrons. Compounds with covalent bonds are called covalent compounds. Choices: - reflectivity compounds - valence compound - ions - covalent compounds A:
**Answer**
covalent compounds

*Question*
Q: What do stored fats provide our body with for later use? Read this paragraph and choose the correct option from the provided answers: Fats are one type of lipid. Stored fat gives your body energy to use for later. It's like having money in a savings account: it's there in case you need it. Stored fat also cushions and protects internal organs. In addition, it insulates the body. It helps keep you warm in cold weather. Choices: - metals - hydrogen - water - energy A:
**Answer**
energy