Term
| 19. What is a star called that explodes? |
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Definition
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| 20. Why do stars and the solar system move in a spiral? |
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Definition
| 20. Another interesting aspect is the so-called "wind-up problem" of the spiral arms. If one believes that the inner parts of the arms rotate faster than the outer part, then the Galaxy will wind up so much that the spiral structure will be thinned out. But this is not what is observed in spiral galaxies; instead, astronomers propose that the spiral arms form as a result of a matter-density wave emanating from the galactic center. This can be likened to a moving traffic jam on a highway — the cars are all moving, but there is always a region of slow-moving cars. Thus this results in several spiral arms where there are a lot of stars and gas. |
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| 21. What determines a star's magnitude or brightness? |
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Definition
21. 1) How hot it is.
2) It's size.
3) How close it is to Earth. |
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| 22.Why does the Sun appear so bright compared to the stars at night? |
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Definition
| 22. Because space the stars are very far away as compared to the Sun. |
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| 23. What color star is the Sun? |
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Definition
| 23. Yellow. It is 10,000 degrees Fahrenheit. |
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Definition
| 24. As an astronomer he found that many distant objects were galaxies. He showed that the universe is expanding. He also found that there seems to be equal number of galaxies in every direction from us. |
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| 25. What is in most of outer space? |
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Definition
| 25. Most of space is empty. |
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Term
| 26. How does a nebula form a new star? |
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Definition
| 26. When a nebula shrinks because of gravity that builds up, it becomes a proto star. Eventually, when there's enough gravity, the materials in the nebula combine and form a star. |
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Term
| 27. Why are different constellations seen at different seasons? |
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Definition
| 27. Because of the path the Earth takes around the Sun. |
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| 28. Explain what happens when you see a constellation one week and then observe it again in a week? |
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Definition
| 28. It will appear in a different position in the sky. |
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| 29. What is the closest galaxy to the Milky Way? |
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Definition
| 29. The new answer to this old question is the Canis Major dwarf galaxy. |
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Term
| 30. Name the constellation shaped like a hunter, with a giant bow and belt. |
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Definition
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| 31. Name the nine planets in correct order (start with the one closest to the Sun). |
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Definition
| 31. Mercury, Venus, Earth, Mars, Jupiter, Saturn, Neptune and Uranus. |
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Term
| 32. What is a solar eclipse |
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Definition
| 32. It is when the Sun is blocked by the Moon and darkness occurs on Earth. |
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Term
| 33. When the tide occurs, name the force that affects it. |
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Definition
| 33. Gravitational force of the Moon. |
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Term
| 34. Why do we have mnore daylight in the summer? |
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Definition
| 35. The tilt of the Earth allows more light to shine on the northern hemisphere during our summer months. |
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| 35. Can you tell the difference between planets and stars when observing them at night? |
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Definition
| 35. Yes, with a good telescope |
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Term
| 36. What determines the length of a year on Earth? |
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Definition
| 36. The time it takes to make one revolution around the Sun. |
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Term
| 37. Tell the path food goes when it enters the body until it leaves the body? |
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Definition
37. Digestive System
The digestive system is made up of organs that break down food into protein, vitamins, minerals, carbohydrates, and fats, which the body needs for energy, growth, and repair.
After food is chewed and swallowed, it goes down the esophagus and enters the stomach, where it is further broken down by powerful stomach acids.
From the stomach the food travels into the small intestine. This is where your food is broken down into nutrients that can enter the bloodstream through tiny hair-like projections.
The excess food that the body doesn't need or can't digest is turned into waste and is eliminated from the body. |
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Term
| 38. Name the functions of the skeletal system. |
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Definition
38. A. The skeleton provides the framework for the body.
B. The skeleton protects organs in the body.
C. Blood Cell Production.
D. Movement. The bones are the levers that help the body move in different directions and in different ways.
E. Mineral Storage. One of the minerals that the body needs is calcium. Calcium is a major part of bone, and this is where the body stores its calcium. |
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Term
| 39. Name the organs of the respiratory system. |
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Definition
| 39. The respiratory system brings air into the body and removes carbon dioxide. It includes the nose, trachea, and lungs. When you breathe in, air enters your nose or mouth and goes down a long tube called the trachea. The trachea branches into two bronchial tubes, or primary bronchi, which go to the lungs. The primary bronchi branch off into even smaller bronchial tubes, or bronchioles. The bronchioles end in the alveoli, or air sacs. Oxygen follows this path and passes through the walls of the air sacs and blood vessels and enters the blood stream. At the same time, carbon dioxide passes into the lungs and is exhaled. |
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Term
| 40. Tell the path blood goes when it leaves the heart and then tell how it returns. |
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Definition
40. The circulatory system is the body's transport system. It is made up of a group of organs that transport blood throughout the body. The heart pumps the blood and the arteries and veins transport it. Oxygen-rich blood leaves the left side of the heart and enters the biggest artery, called the aorta.
The aorta branches into smaller arteries, which then branch into even smaller vessels that travel all over the body. When blood enters the smallest blood vessels, which are called capillaries, and are found in body tissue, it gives nutrients and oxygen to the cells and takes in carbon dioxide, water, and waste.
The blood, which no longer contains oxygen and nutrients, then goes back to the heart through veins. Veins carry waste products away from cells and bring blood back to the heart , which pumps it to the lungs to pick up oxygen and eliminate waste carbon dioxide. |
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Term
| 41. Sound and touch are part of what system? Then it transmits the electrical signal to your? |
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Definition
| 41. Nervous System. Then it transmits the electrical signal to our brain. |
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Term
| 42. What are the stages of photosynthesis? |
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Definition
42. 1) light dependent and 2)light independent reactions.
Light dependent is when chemical energy is created, this is fueled by the photons emitted by the sun. Example ATP is formed.
Light independent reactions: when the chemical energy is used to create carbohydrates to "feed" the plant. No light is needed for this stage. |
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Term
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Definition
| 43. Chlorophyll-containing plastid found within the cells of plants and other photosynthetic eukaryotes. |
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Term
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Definition
| 44. Any of a group of green pigments that are found in the chloroplasts of plants and in other photosynthetic organisms. |
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Term
| 45. Draw and label all the parts of a plant. Tell what each part does. |
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Definition
| 45. http://plants.pppst.com/plantparts.html |
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