PCQ

Question 1

The global mean surface temperature has been increasing every year since 1880.

Answer 1

False

Question 2

Population growth and urbanisation have been the main drivers of man-made climate change.

Answer 2

TRUE

Question 3

Snowfall is a form of precipitation.

Answer 3

TRUE

Question 4

Electricity is a primary source of energy for human societies.

Answer 4

FALSE

Question 5

Which of the following is NOT a stage in the progression of droughts as understood in this course?

Answer 5

industrial drought

Question 6

Which continent below has experienced the largest population growth in absolute terms?

Answer 6

Asia

Question 7

Which of the following is NOT a greenhouse gas?

Answer 7

nitrogen

Question 8

Scientific statements have which of the following characteristics?

Answer 8

(i) specific
(ii) measurable
(iii) testable

Question 9

Which of the following is NOT a weather hazard?

Answer 9

Earthquake

Question 10

Which fossil fuel is likely to experience the strongest growth in consumption in the next ten years?

Answer 10

Natural gas

Question 11

Which is the most abundant greenhouse gas in Earth’s atmosphere?

Answer 11

Water Vapour

Question 12

Which philosopher of Science wrote about “scientific revolutions”?

Answer 12

Thomas Kuhn

Question 13

Which fossil fuel is likely to experience the strongest growth in consumption in the next ten years?

Answer 13

Natural Gas

Question 14

Which of the following is NOT a national tap of Singapore?

Answer 14

Water import from East Malaysia

Question 15

If the return period of a maximum wind gust of 108 km/h is 3.5 years, this means that ________.

Answer 15

the wind is weaker than 108 km/h within 3.5 years.

Question 16

Which of the following is NOT always a renewable energy source?

Answer 16

Waste-to-energy

Question 17

Cloud-seeding technology is unsustainable because ________.

Answer 17

the technology is built upon pseudoscience

Question 18

The unit “kiloton CO2 equivalent per year” is a measure of ________.

Answer 18

methane emission

Question 19

Floods tend to occur along a river bank when ________.

Answer 19

(ii) the river has a limited capacity to discharge water

(iii) the nearby sea is at high tide

Question 20

Which of the following is NOT an impact of climate change on the society?

Answer 20

More people migrate to small tropical islands in the Pacific to enjoy the heat.

Question 21

What is the approximate rate of increase of the global mean surface temperature over the 20th century?

Answer 21

0.1 degree Celcius per decade

Question 22

In 2016, 20.0% of the water used in Singapore is derived from the local catchment of rainfall. Local NEWater and desalination technologies have to capacity to supply Singapore by up to 40.0% and up to 25.0% of its water demand in the same year. From these data, how much of Singapore’s water demand is imported from Malaysia?

Answer 22

Insufficient data to determine the answer

Question 23

Which country below is the safest for a person to live in with regards to typhoon risk?

Answer 23

Rainyterre

Question 24

One definition of a heat wave is that it is an unbroken period of least 5 days when daily maximum temperature at a place is at least 5°C higher than T, where T is the normal maximum temperature for the hottest month of the year. What could be problematic about this definition?

Answer 24

(ii) Near the equator, temperature almost never fluctuate beyond 5°C above T.
(iii) Prolonged periods of extreme heat can be temporarily interrupted by less hot weather of one or two days at a specific place due to local weather.