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IMSO 2008 Science – Taiwan Selection First Round Theory

Question 1

In the water cycle, rain, snow, or sleet falling to the ground is a form of
  1. precipitation.
  2. condensation.
  3. evaporation.
  4. transpiration.

Question 2

Bala conducted an experiment as shown below. When he placed the test-tube into the beaker of hot water, the ink indicator rose. This shows that _________.

Question illustration
  1. air contract when boiled
  2. air does not have definite volume
  3. air can be compressed
  4. air expands when heated.

Question 3

The picture below shows two trees and the beginning of a treehouse. A group of friends is building a treehouse. They are using straight wooden boards to build a platform between two trees. Which of the following is the most important characteristic of the board they have put between the two trees?

Question illustration
  1. color
  2. dryness
  3. hardness
  4. strength

Question 4

A common grass is pictured below. Which labeled parts of the grass absorb most of the minerals needed by this plant?

Question illustration
  1. flowers
  2. leaves
  3. stems
  4. roots

Question 5

The picture below shows a seesaw. A seesaw on a playground is an example of what type of simple machine?

Question illustration
  1. lever
  2. screw
  3. wedge
  4. wheel and axle

Question 6

All of the processes listed below cause changes in Earth’s surface. Which of the following is the slowest to change Earth’s surface?
  1. earthquake activity
  2. landslide
  3. weathering
  4. volcanic eruption

Question 7

Structures like the one shown below can be seen on maple trees at certain times of the year. What is the main function of this structure?

Question illustration
  1. protection
  2. pollination
  3. competition
  4. reproduction

Question 8

The picture below shows a mineral sample being tested with a metal file. Which property of a mineral is most likely tested in this way?

Question illustration
  1. color
  2. hardness
  3. luster
  4. streak

Question 9

The picture below shows a nut and a bolt. Which of the following hand tools would most likely be used to tighten this nut and bolt?

Question illustration
  1. a wrench and a hammer
  2. a hammer and a saw
  3. a wrench and a screwdriver
  4. a screwdriver and a saw

Question 10

The diagram below shows a food chain. Which of the following is classified as a producer?

Question illustration
  1. 1
  2. 2
  3. 3
  4. 4

Question 11

The diagram below shows a cross section of a tree trunk. What are the main functions of wood in a living tree?

Question illustration
  1. support and reproduction
  2. water transport and support
  3. protection and reproduction
  4. water transport and protection

Question 12

Four rods of equal thickness but made of different metals were tested with equal amounts of weight to see which was most flexible. Which of the following is the best way to report the results of this experiment?
  1. a list of each type of rod used
  2. a sketch of each rod before testing
  3. a table showing how much each rod weighed
  4. a bar graph showing how much each rod bent

Question 13

The picture shows a bird. From the shape of its beak and the length of its legs, this bird is best adapted for feeding on which of the following?

Question illustration
  1. insects that feed on plants
  2. small fish in shallow water
  3. nuts from riverside trees and plants
  4. birds in ground nests

Question 14

Some types of trees are able to survive the heat of a forest fire. Which of the following characteristics would best help a tree survive a fire?
  1. large leaves
  2. shallow roots
  3. thick bark
  4. thin trunks

Question 15

The Mohs scale for minerals is shown below. An unknown mineral can be scratched by topaz, but not by feldspar. According to the Mohs scale, which of the following best describes the hardness of the unknown mineral?

Question illustration
  1. less than 5
  2. more than 8
  3. less than 8, but more than 6
  4. more than 4, but less than 6

Question 16

Delilah put a container of water in the freezer and left it there overnight. The next morning she saw that the water in the container had changed to ice. Which of the following statements best explains why the water changed to ice?
  1. The water gained energy.
  2. The water absorbed light.
  3. Mass was released from the water.
  4. Heat was taken away from the water.

Question 17

While on a walk, Samuel saw a tree he had not seen before. He used a key to help him identify the type of tree. A branch from the tree and the key he used are shown below. Based on the key, which type of tree did Samuel most likely see?

Question illustration
  1. fir
  2. spruce
  3. pine
  4. tamarack

Question 18

Which form of precipitation is most likely to cause damage when hitting the roof of a car?
  1. hail
  2. rain
  3. sleet
  4. snow

Question 19

An incomplete food chain is shown below. Which of the following organisms would best complete the food chain?

grass seed → mouse → ? → hawk

Question illustration
  1. rabbit
  2. robin
  3. snake
  4. tree

Question 20

The picture below shows a plant that is bending as it grows. What most likely caused the plant to bend this way?

Question illustration
  1. fertilizer
  2. gravity
  3. heat
  4. light