Welcome to your Grade 8 General science chapter 1
After carefully reading the following 30 questions, choose the correct answer.
1.
What is the process of obtaining the magnitude of a quantity relative to an agreed standard?
2.
Which indigenous unit of length is measured from the tip of the little finger to the tip of the thumb when the hand is stretched?
3.
What is the indigenous Ethiopian unit for the distance from the tip of the elbow to the tip of the middle finger?
4.
Which of the following is an indigenous unit used to measure mass in Ethiopia?
5.
How is the "digit" defined in indigenous length measurement?
6.
What term describes a property of an object that can be measured or calculated?
7.
Which of these is a fundamental (base) physical quantity?
8.
How many fundamental physical quantities are there in total?
9.
In the International System of Units (SI), what is the base unit for mass?
10.
What is the SI unit for measuring temperature?
11.
Which term refers to quantities obtained by mathematically combining fundamental quantities?
12.
What is the SI unit of density?
13.
What name is given to the shorthand form used for writing very large or very small numbers?
14.
Which prefix represents the value 1,000 (10³)?
15.
What does the prefix "milli" represent in measurements?
16.
What term refers to how close a measurement is to the accepted or true value?
17.
What term refers to how close a series of measurements are to each other?
18.
What is the process of learning about the world through observation, inquiry, and testing hypotheses?
19.
Which step of the scientific method often follows after making observations?
20.
What is an educated guess or a possible explanation for an observation that can be tested?
21.
What type of hypothesis states there will be "no air needs for burning" in a specific experiment?
22.
In a scientific investigation, what is the purpose of an experiment?
23.
What is the final step in the scientific method mentioned in the text?
24.
Which gas in the air is necessary for the combustion (burning) of a candle?
25.
In an experiment where a candle is covered by a gas jar, what happens to the candle after a short time?
26.
Which indigenous method of time measurement is mentioned in the text?
27.
What are the two parts of any measurement result?
28.
If a student has a mass of 32 kg, what part of this measurement is the unit?
29.
What prefix corresponds to 1/1000?
30.
What does "SI" stand for in measurement?
