This site is 100% ad supported. Please add an exception to adblock for this site.

National Round

Terms

undefined, object
copy deck
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

Deck Info

42

permalink