ONE-EIGHTH STAGE 2025
Ghana National College: 65 points
Tema Secondary School: 33 points
Effiduase SHCS: 28 points
Mankranso SHS: 43 points
St Paul's SHS, Denu: 23 points
Adonten SHS: 14 points
St. Thomas Aquinas SHS: 51 points
Tamale SHS: 37 points
O'Reilly SHS: 25 points
ROUND 4 - TRUE OR FALSE
SET TWO
1. A Tera is equivalent to 10 raised to power 12.
ANSWER: TRUE
EXPLANATION:
Tera (T) means $10^{12}$.
2. A Giga is equivalent to 10 raised to the power 10.
ANSWER: FALSE
EXPLANATION:
Giga (G) means $10^{9}$, not $10^{10}$.
3. A Pico is equivalent to 10 raised to the power negative 9.
ANSWER: FALSE
EXPLANATION:
Pico (p) means $10^{-12}$; $10^{-9}$ is nano.
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PRACTICE QUESTIONS
1. QUESTION: Kilo means $10^{3}$.
ANSWER: TRUE
EXPLANATION:
$1$ km $= 1000$ m.
2. QUESTION: Mega means $10^{6}$.
ANSWER: TRUE
EXPLANATION:
$1$ MW $= 10^{6}$ W.
3. QUESTION: Milli means $10^{-6}$.
ANSWER: FALSE
EXPLANATION:
Milli means $10^{-3}$; micro means $10^{-6}$.
4. QUESTION: Nano means $10^{-9}$.
ANSWER: TRUE
EXPLANATION:
$1$ nm $= 10^{-9}$ m.
5. QUESTION: Centi means $10^{-2}$.
ANSWER: TRUE
EXPLANATION:
$1$ cm $= 0.01$ m.
6. QUESTION: Micro means $10^{-3}$.
ANSWER: FALSE
EXPLANATION:
Micro means $10^{-6}$.
7. QUESTION: With SI prefixes, $1$ gigabyte is $1000$ megabytes.
ANSWER: TRUE
EXPLANATION:
$\dfrac{10^{9}}{10^{6}} = 10^{3}$.
8. QUESTION: Deci means $10^{1}$.
ANSWER: FALSE
EXPLANATION:
Deci means $10^{-1}$; deca means $10^{1}$.
9. QUESTION: Femto means $10^{-15}$.
ANSWER: TRUE
EXPLANATION:
It is $10^{-3}$ times pico.