Chapter 1

Question 1

Factor and prefix of Tera

Answer 1

1. 10^12
2. (T)

Question 2

Factor and prefix of Giga

Answer 2

1. 10^9
2. (G)

Question 3

Factor and prefix of Mega

Answer 3

1. 10^6
2. (M)

Question 4

Factor and prefix of kilo

Answer 4

1. 10^3
2. (k)

Question 5

Factor and prefix of deci

Answer 5

1. 10^-1
2. (d)

Question 6

Factor and prefix of centi

Answer 6

1. 10^-2
2. (c)

Question 7

Factor and prefix of milli

Answer 7

1. 10^-3
2. (m)

Question 8

Factor and prefix of micro

Answer 8

1. 10^-6
2. (µ)

Question 9

Factor and prefix of nano

Answer 9

1. 10^-9
2. (n)

Question 10

What are parallax errors

Answer 10

When our eyes are not positioned such that our line of sight is perpendicular to the rule

Question 11

What are random erros (Human reaction time) in time taking

Answer 11

The manual operation of starting and stopping a stop watch introduces random errors. Human reaction time is about 0.3-0.5 for most people

Question 12

What is Distance

Answer 12

1. The total length covered by an object regardless of the direction
2. Scalar value (only has magnitude)
3. (m) unit

Question 13

What is Displacement

Answer 13

1. The distance between points A and B in a straight line in a specific direction
2. A vector quantity (has magnitude and direction)
3. (m) unit

Question 14

What is the function of a digital caliper

Answer 14

Measure the internal and external diameters of an object accurately

Question 15

Function of outside jaws

Answer 15

Calculate external diameter or width of object

Question 16

Function of inside jaw

Answer 16

Calculate internal diameter

Question 17

Function of tail

Answer 17

Calculate depth of an object

Question 18

Function of anvil and spindle

Answer 18

Measure diameter of an object

Question 19

What is a micrometer screw gauge

Answer 19

it measures objects that are too small to be measured using digital calipers

Question 20

Function of rachet

Answer 20

Can be turned to adjust the spindle so it is in contact with the object

Question 21

What is the smallest division of a measuring tape

Answer 21

0.1 cm or 1 mm

Question 22

What is the smallest division of a meter rule

Answer 22

0.1 cm or 1 mm

Question 23

What is the smallest division of a digital caliper

Answer 23

0.01 cm 0.1 mm

Question 24

size of atom

Answer 24

0.1 nm

Question 25

size of dust particle

Answer 25

1 um

Question 26

diameter of human hair

Answer 26

0.1 mm

Question 27

diameter of earth

Answer 27

12 Mm

Question 28

diameter of sun

Answer 28

14 Gm

Question 29

Key takeaways for pendulmn concept

Answer 29

✅ A longer pendulum has a longer period (swings slower).
✅ A shorter pendulum has a shorter period (swings faster).
✅ Mass is not in the formula, meaning it does not affect the period.