Answer the following question given this paragraph: When iron filings and sulfur powder are mixed together in any ratio, they form a mixture. No chemical reaction occurs, and both elements retain their individual properties. A magnet can be used to mechanically separate the two elements by attracting the iron filings out of the mixture and leaving the sulfur behind. Q: What can be used to mechanically separate the two elements by attracting the iron filings out of the mixture and leaving the sulfur behind? Choices: - centrifuge - laser - graduated cylinder - magnet A:
magnet
(Question)
Answer the following question given this paragraph: Today, some 1,200 species of birds are threatened with extinction by human actions. Humans need to take steps to protect this precious and important natural resource. What can you do to help?. Q: Around 1200 species of what broad animal group are currently at risk of extinction due to human activity? Choices: - mammals - reptiles - amphibians - birds A:
(Answer)
birds
Ques: Answer the following question given this paragraph: The drummer in Figure below is hitting the drumheads with drumsticks. This causes the drumheads to vibrate. The vibrations pass to surrounding air particles and then from one air particle to another in a wave of energy called sound energy . We hear sound when the sound waves reach our ears. Sound energy can travel through air, water, and other substances, but not through empty space. That's because the energy needs particles of matter to pass it on. Q: What energy, produced by vibrations, cannot travel through empty space? Choices: - light - heat - plasma - sound A:
Ans: sound
(Q).
Answer the following question given this paragraph: Ovulation , the release of an egg from an ovary, is part of the menstrual cycle , which typically occurs each month in a sexually mature female unless she is pregnant. Another part of the cycle is the monthly period, or menstruation. Menstruation is the process in which the endometrium of the uterus is shed from the body. The menstrual cycle is controlled by hormones from the hypothalamus, pituitary gland, and ovaries. For an interactive animation of the menstrual cycle, you can go this link: http://health. howstuffworks. com/adam-200132. htm. Q: The release of an egg from an ovary, is part of what cycle? Choices: - life - stomach - fetal - menstrual A:
(A).
menstrual
Ques:Answer the following question given this paragraph: Haumea is the third-brightest Kuiper belt object. Haumea has two moons. Haumea's odd oval shape is probably caused by its extremely rapid rotation. It rotates in just less than 4 hours! Like other Kuiper belt objects, Haumea is covered by ice. Its density is similar to Earth's Moon, at 2.6 3.3 g/cm 3 . This means that most of Haumea is rocky. Q: Haumea, which is the third brightest kuiper belt object has an odd oval shape which is probably caused by what? Choices: - unusually rapid rotation - particularly rapid rotation - Slow rotation - extremely rapid rotation A:

Ans:extremely rapid rotation
Question: Answer the following question given this paragraph: Some landforms created by erosion are platforms, arches, and sea stacks. Q: Platforms, arches, and sea stacks are all landforms created by what? Choices: - sediment - volcanic activity - debris - erosion A:
Answer:
erosion