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IMSO 2004 Science – Taiwan Selection First Round Theory

Question 1

It is a process whereby a fluid spreads from a more concentrated area to a less concentrated area.
  1. diffusion
  2. effusion
  3. expansion
  4. regulation

Question 2

When masses of cold and warm air meet, they form a/ an ________.
  1. front
  2. ITCZ
  3. monsoon
  4. storm

Question 3

The transfer of pollen grains from one flower to the stigma of another flower of the same kind is called ________.

A. cross-pollination

B. self-pollination

C. ovulation

D. vegetative propagation

Question 4

A neutral atom consists of charged particles. The negatively-charged particle surrounding the nucleus is the ________.
  1. electron
  2. meson
  3. neutron
  4. proton

Question 5

Lymphocytes are one of the major types of white blood cells. Which endocrine gland stimulates the production of lymphocytes?
  1. thyroid gland
  2. thymus
  3. pancreas
  4. gonads

Question 6

A person gets infected by hepatitis A – causing bacteria. Which part of the body does these bacteria infect?
  1. eyes
  2. liver
  3. lungs
  4. skin

Question 7

A blood vessel that carries mostly deoxygenated blood towards the heart is the ________.
  1. aorta
  2. artery
  3. capillary
  4. vein

Question 8

What do you call the position of the moon farthest from the Earth?
  1. apogee
  2. aphelion
  3. perigee
  4. perihelion

Question 9

In plants, fertilization takes place when ________.
  1. the sperm nucleus unites with the egg cell of the volume.
  2. seeds begin to germinate.
  3. pollen grains fall from the petals
  4. fruit begins to form

Question 10

If sound waves were to travel from one end to the other of each block at the same starting time, where will the sound reach the other end first?
  1. air
  2. railroad track
  3. underwater
  4. vacuum

Question 11

Atoms of the same elements have the same atomic numbers but may have different mass numbers. This species is called ________.
  1. compounds
  2. ions
  3. isotopes
  4. molecules

Question 12

It is the imaginary line that divides the earth into two halves: the northern and the southern hemisphere.
  1. meridian
  2. longitude
  3. latitude
  4. equator

Question 13

All planets revolve around the sun in a certain path called ‘orbit’. The sphere of the earth’s orbit is ________.
  1. circular
  2. elliptical
  3. oblate spheroid
  4. unknown

Question 14

A waling-waling is attached to a tree. It is example of a relationship known as ________.
  1. predation
  2. parasitism
  3. mutualism
  4. commensalism

Question 15

The attraction of the molecules of a substance to the molecules of the same substance is called ________.
  1. adhesion
  2. capillarity
  3. cohesion
  4. surface tension

Question 16

More than 300 years ago, Robert Hooke used a primitive microscope to observe the box-like cavities in slices of cork. These compartments are found to be the structural and functional unit of life. They are now called ________.
  1. atoms
  2. cells
  3. eggs
  4. nuclei

Question 17

Scientists have found that the amount of carbon dioxide in the atmosphere has increased significantly in the past years causing a rise in the global temperature. The trapping of heat radiation in the earth’s atmosphere is known as the ________.
  1. acid rain
  2. global warming
  3. greenhouse effect
  4. ozone depletion

Question 18

It is a state of matter that is composed of electrically charged atomic particles.
  1. gas
  2. liquid
  3. plasma
  4. solid

Question 19

The rhythmic expansion and contraction of blood vessels caused by the pressure of the blood is called ________.
  1. blood pressure
  2. heartbeat
  3. heart rate
  4. pulse

Question 20

The moon and the sun exert a gravitational pull on earth causing a change in the water level of the oceans. What do you call this rise and fall in water level?
  1. eclipse
  2. phase
  3. season
  4. tide