1What is measurement?
2What is an SI unit?
3Why was the SI system developed?
4What is volume?
5What problems could have arisen if a system of measurement had never been developed?
6Write the differences between local units and standard units.
7Write the improvements that the making of standard units brought to the system of measurement.
8A student's father bought a vest and a pair of trousers from the market. When the student put them on, the vest was too long and the waist of the trousers was too small to wear. Find the reason for this problem and write the ways of solving it.
9Show the steps of scientific learning in a flow chart. Mention the main feature of each step in the chart as well.
10Convert 2 hours into seconds.
11Convert 15 kg into grams.
12Convert 2 m² into square centimetres.
13Convert 4 m³ into cubic centimetres.
14Was the apple falling in front of Newton the first such event in the world? Why was it Newton who succeeded in finding out the truth behind it?
15Write the seven steps of the scientific learning process in order.
16What is a physical quantity? Give four examples.
17Why is the volume of a liquid measured with a measuring cylinder rather than with a glass?
18Why can one hand length not be converted into centimetres exactly?
19How many litres are there in 1 m³, and how many millilitres does that make?
20Why is testing treated as the most important step of the scientific learning process?