Grade 9 Science Quiz Bee Phase 2

1. What is the smallest blood vessel in the body where it is the actual site of gases and nutrients exchanged?

• A. Arteries

• B. Capillaries

• C. Heart

• D. Veins

2. The nutrients obtained from the food during digestion are supplied by the circulatory system to the body. What does the circulatory system distribute to the body as it works with the respiratory system?

• A. Carbon dioxide

• B. Nitrogen

• C. Oxygen

• D. Halogen

3. If solid and liquid wastes are removed from the body through defecation and urination, what is released by the body as waste during respiration?

• A. Carbon dioxide

• B. Nitrogen

• C. Oxygen

• D. Halogen

4. A ball is hit at an angle of 30^o. At what point in its trajectory does this projectile have the least speed?

• A. Just after it was launched

• B. At the highest point

• C. Just before it hits the ground

• D. Halfway between the ground and the highest point

5. In power stations generating electricity, power is measured in ___________.

• A. joule

• B. kilojoule

• C. megawatt

• D. kilowatt hour

6. Who proposed the probability that electrons will be found in certain locations around the nucleus of an atom?

• A. Neils Bohr

• B. Erwin Schrodinger

• C. Ernest Rutherford

• D. J.J. Thomson

7. Element X belongs to Group 1. Which of the following best describes element X?

• A. high electronegativity

• B. high ionization energy

• C. low electronegativity

• D. a non-metallic element

8. Which of the following solute will make water a good conductor of electricity?

• A. sugar

• B. oil

• C. wax

• D. monosodium glutamate

9. What happens to the temperature of air when altitude increases?

• A. remains the same

• B. increases

• C. decreases

• D. varies

10. Why can we see different parts of the sky at different times of the year?

• A. Due to the tilt of the earth’s axis

• B. Due to the rotation of the earth

• C. Due to the revolution of the earth

• D. Due to the rotation of the sun