Science 9 Post Assessment

1. Which characteristic of magma mainly determines its explosiveness?

• Silica content

• Amount

• Temperature

2. Which of the following characteristics of a volcano depends on its magma emission?

• Location

• Shape

• Age

3. Which of the following factors associated with huge volcanic eruptions may cause the decrease in the Earth’s average temperature for a few years?

• Heat

• Acid rain

• Volcanic ash

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

• decreases

• increases

• remains

5. Which of following is an indication of global warming?

• Rising of sea level

• Coastal erosion

• Decrease of global temparature

6. City A is surrounded by bodies of water and has a moderate climate. It is located near the equator. What will most likely affect the climate of the city?

• Latitude, Altitude, and Topography

• Surrounding bodies of water, Altitude, and Topography

• Surrounding bodies of water, Latitude, and Topography

7. The production of electricity from geothermal energy is cheaper than the electricity produced using natural gas, coal and hydropower.

• False

• True

8. The heat from deep inside the Earth is a source of energy which is called geothermal energy which can be harnessed to generate electricity.

• False

• True

9. Zodiacal constellations can only be seen during specific times of the year.

• False

• True

10. Constellation maps divide the celestial sphere into 98 parts, known as constellations, helping astronomers locate stars and deep sky objects.

• False

• True