1.
Which of the following measurements would NOT be used for measuring the height of someone?
Correct Answer
C. Litres
Explanation
Litre is an SI measurement of VOLUME
2.
Which of the following is the SI Measurement for Force?
Correct Answer
E. Newton
Explanation
Newton is the SI unit for force. It is named after Sir Isaac Newton, a renowned physicist. The Newton is defined as the amount of force required to accelerate a one-kilogram mass by one meter per second squared. It is commonly used to measure the force exerted on an object or the force required to move an object. Other options such as Joule, Watt, Metre, and Second are SI units for energy, power, distance, and time, respectively, and are not directly related to force.
3.
The SI Unit for time is:
Correct Answer
A. Second
Explanation
The SI unit for time is the second. It is defined as the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium-133 atom. The second is widely used in scientific and everyday measurements of time, and it is the base unit for all other units of time in the International System of Units (SI).
4.
How many grammes are there in a kilogramme?
Correct Answer
D. 1000
Explanation
Kilo means 1000
5.
238000 Joules would be better expressed as:
Correct Answer
B. 238kJ
Explanation
The correct answer is 238kJ because the prefix "k" represents kilo, which is equal to 1000. Therefore, 238kJ is equivalent to 238,000 Joules.
6.
Convert 1.2m into millimetres.
Correct Answer
C. 1200mm
Explanation
To convert meters to millimeters, we need to multiply the given value by 1000 since there are 1000 millimeters in 1 meter. Therefore, 1.2m is equal to 1200mm.
7.
The new power stations measure their power output in Gigawatts. The power of an electric kettle is measured in kilowatts. How many kilowatts are there is a Gigawatt?
Correct Answer
D. 1000000
Explanation
A Gigawatt is equal to 1,000,000 kilowatts.
8.
Which of the following is a unit of electric current?
Correct Answer
D. Amp
Explanation
The unit of electric current is amp, short for ampere. It is a measurement of the rate at which electric charge flows in a circuit. Ohm is the unit of electrical resistance, volt is the unit of electrical potential difference, watt is the unit of power, and coulomb is the unit of electric charge.
9.
How many cm are there in 1.59km?
Correct Answer
D. 159000
Explanation
To convert kilometers to centimeters, we need to multiply the number of kilometers by 100,000. In this case, 1.59 kilometers multiplied by 100,000 equals 159,000 centimeters. Therefore, the correct answer is 159000.
10.
How many inches are there in 100 yards?
Correct Answer
E. 3600
Explanation
There are 36 inches in a yard, so to find the number of inches in 100 yards, we multiply 36 by 100. Therefore, there are 3600 inches in 100 yards.