AVERAGE ROUND (SCI-OLYMPIAD)

Under the same conditions of pressure and temperature, a liquid differs from a gas because the molecules of the liquid ...

• have no regular arrangement.

• are in constant motion.

• have stronger forces of attraction between them.

• take the shape of the container they are in.

The movement of food through the intestines is known as:

• Peristalsis

• Ileum translation

• Microvilli propulsion

• Flexure propulsion

A base sequence is shown below.

ACAGTGC

How would the base sequence be coded on mRNA?

• TGTCACG

• GUGACAU

• UGUCACG

• CACUGUA

Although many ancient civilizations designated certain patterns of stars as

constellations, they never included planets in their constellations. What feature of

planets, as opposed to stars, explains this?

• They look bigger than stars.

• They are more difficult to see than stars.

• There are not enough of them to form a constellation.

• They do not maintain fixed positions relative to other planets or stars

Light year is a measurement of…

• speed of aeroplanes

• speed of light

• Stellar distances

• speed of rockets

P1V1 = P2V2 represents:

• Archimedes’ principle

• Charles’ law

• Boyle’s law

• Anderson’s principle

Which of the following statements best describes how the planets of the solar system formed?

• They are condensed rings of matter thrown off by the young Sun.

• They are the remains of an exploded star once paired with the Sun.

• The Sun captured them from smaller, older nearby stars.

• They formed from a nebular cloud of dust and gas.

A communication satellite is in a circular orbit around Earth. If the speed of the satellite is constant, the force acting on the satellite…

• is zero.

• is decreasing.

• points toward the center of Earth at all times.

• points in the direction that the satellite is moving.