National Round
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- What common poisonous gas kills humans by strongly binding to hemoglobin in the bloodstream?
- CARBON MONOXIDE
- A piano tuner notices a standing Lissajous (pron: Liss-a-jew) pattern on his oscilloscope. The tone being projected is:
- RESONATING
- The first law of thermodynamics is most closely related to:
- THE CONSERVATION OF ENERGY
- Name three elements that were named after Greek or Roman gods.
- MERCURY, URANIUM, NEPTUNIUM, PLUTO
- Hypohalites (pron: hypo-hay'-lites) are commonly used as:
- BLEACHING AGENTS
- What stimulates glycogenesis in the body?
- INSULIN
- A perfectly spherical bubble of air is suspended in a tank of water. A beam of light consisting of parallel rays passes through the bubble. As the light emerges from the opposite side of the bubble, the light rays:
- DIVERGE
- The percentage of mechanical energy that can theoretically be turned into heat energy according to the first law of thermodynamics is:
- 100 PERCENT
- What are chanterelles (pron: shant-u-rels), king boletes (pron: bo-leets'), slippery jacks, and morels (pron: muh-rels')?
- MUSHROOMS
- What measure of length, mainly used for sea depths, was originally the breadth of the outstretched arms?
- FATHOM
- Several textures of intrusive rocks are related to the cooling history of the magma or lava. What texture is formed from rapid cooling?
- APHANITIC - TEXTURE OF MINERALS IS TOO SMALL TO BE SEEN WITHOUT MAGNIFICATION.
- Compositions of magmas are characterized according to their silica content. There are three types. These are:
- MAFIC, INTERMEDIATE, FELSIC
- How are the noble gases obtained?
- THESE GASES ARE OBTAINED FROM THE DISTILLATION OF LIQUID AIR
- A wooden board 2 meters long, 30 centimeters wide, and 4 centimeters thick floats in water with 1 centimeter of its thickness above the surface. The mass of the board is:
- 18 KILOGRAMS
- A system absorbs heat Q and has an equal amount of positive work done on it. What is the change in the internal energy of the system?
- 2Q
- Craters and maria (seas) cover the Moon. Compared to the near side of the Moon, the far side is:
- MORE CRATERED, WITH LESS EXTENSIVE MARIA
- Which planets rotate in retrograde motion, opposite in direction of their revolution around the sun?
- VENUS AND URANUS
- In proportion to its size, what bird lays the largest egg?
- KIWI
- gymnosperms
-
are seed plants.
include ginkgo (pron: ging'-ko) and cycads (pron: si'-kad)
are cone-bearers. - Oceans are the primary source for the element
- BROMINE
- The chemical formula of milk of magnesia is
- MAGNESIUM HYDROXIDE
- Ice skating is possible and practical because of what unique property of water?
- THE MELTING POINT DECREASES WITH INCREASING PRESSURE
- If a piece of iron is exposed to the sun, its temperature rises until:
- IT LOSES AND GAINS HEAT AT THE SAME RATE
- The polar equation, r = 6t/pi represents which of the following graphs?
- ARCHIMEDIAN-SPIRAL
- The Rh (pron: R-h) factor was named after what animal?
- RHESUS MONKEY
- There are various types of plant stems that have different functions. Some types of stem are:
-
Tendrils
Tubers
Rhizomes - The farthest astronomical phenomena from our vantage point on Earth are singular sources of light brighter than hundreds of galaxies combined. These phenomena are called:
- QUASARS
- Elements on Earth with atomic numbers higher than that of iron were formed in:
- SUPERNOVAE
- colligative property
-
Freezing point
Rate of diffusion through a membrane
Vapor pressure - In the presence of excess oxygen, potassium, rubidium, and cesium form
- SUPEROXIDES
- What is the name of the ocean whose wind systems cause an almost complete reversal of its circulation?
- INDIAN OCEAN
- What device first proved that Earth rotates on its axis?
- FOUCAULT PENDULUM (pron: fu'-colt)
- A round viewing window with a 20-centimeter diameter is installed in a tank at the Shedd Aquarium. It is 5 meters below the water surface. The force on the window is approximately:
- 1,500 NEWTONS
- If the absolute temperature of the filament of a lamp were doubled, the energy radiated per second by the filament would:
- INCREASE BY A FACTOR OF 16
- What starchy substance comes from the bitter root of the cassava plant and is used to thicken soups and puddings?
- TAPIOCA
- Who discovered Nitrogen?
- (DANIEL) RUTHERFORD
- When a rock is identified as felsic (pron: fel-sic), this means the rock is
- SILICATE RICH
- Common volcanic rocks are
- ANDESITE, BASALT, AND TUFF
- The approximate latitude at which rocks that contain magnetite particles were formed can be determined by measuring
- magnetic dip of the particles
- The energy represented by the latent heat of melting is being used to
- break hydrogen bonds
- Side-scanning sonar is towed above the sea floor when the researchers are seeking the location of what ocean floor feature
- hydrothermal vents
- The method of analyzing tides which takes into account the presence of the continents and their effect on tides is
- dynamic tidal analysis