Sec 1 Faith: Chapter E2 Photosynthesis

Sec 1 Hope: Common Mistakes made in Class Test 2

Some of the common mistakes made in Class Test (2):



SECTION A

Q1 Which of the following statements about SI units is true?



Option D
** Pls Learn the SI units for different quantity



SECTION B

Q2 ** Pls learn the name of different parts of a vernier calipers

** Pls learn how to read the reading on the vernier calipers.

http://www.upscale.utoronto.ca/PVB/Harrison/Vernier/Vernier.html

Q5 (b) Reading on the electronic balance = 8.080 g

• The representation of the reading of a electronic balance will be the exact same reading as what is featured on the display.

(c) Mass of each block = 2.020 g

• 3 dec. plc. should be given to the answer as this is the accuracy of the electronic balance featured in this question.

Q6 (c)

i) The time taken for one oscillation increases with the length ( True )

Longer distance more time is needed.

ii) The time for a large swing and a small swing is the same ( True )

The time taken for oscillation is only affected by the length of string (distance) and not by other factors.

Sec 1 Faith: Common Mistakes made in Class Test 2

Some of the common mistakes made in Class Test (2):

SECTION A
Q5. Pure ice melts at 0 degC

• To test the purity of water, we will observed that water will boil exactly at 100 degC
• To test the purity of ice, we will observed that ice will melt exactly at 0 degC

SECTION B
Q1. Explain what is meant by the term "mass"
The amount of substance/matter packed in an object.

• Weight is the weight is a measurement of the gravitational force acting on an object
• Volume is the amount of space a substance occupies

** Pls learn how to read a vernier caliper. http://www.upscale.utoronto.ca/PVB/Harrison/Vernier/Vernier.html