CH1 Scientific Endeavour

Which is an example of qualitative data?

• Mdm Seow has a 5 kg school bag.

• Mdm Low's hair is 30 cm long.

• Mr Kartik is stronger than Mr Chng.

• Mr Sim is 10 cm taller than Mrs Chia.

"To be a good basketball player, you should be at least 170 cm tall."

This statement is an example of

• qualitative data

• quantitative data

• both qualitative and quantitative data

• neither qualitative nor quantitative data

After conducting experiments and collecting measurements, we should

• analyse the data for trends and patterns

• communicate the findings to the scientific community

• decide which quantities should be kept constant

• pose questions and form a hypothesis

Which is not a rule of lab safety?

• safety goggles should be worn during experiments

• long hair should be tied back

• wash hands thoroughly before leaving the lab

• clear all broken glassware quickly

What hazard symbol is this?

• corrosive

• explosive

• flammable

• environmental toxicity

What hazard symbol is this?

• corrosive

• irritant

• oxidiser

• acute toxicity

Which is not a consideration we should have when looking at issues?

• Administrative

• Economic

• Ethical

• Social

Mr Chng's hypothesis is, "The closer a student stays to school, the later they will be for school."

To test this, which variable should be changed?

• time which student reaches school

• frequency of bus arrivals

• distance which student stays from school

• method which student takes to come to school

What hazard symbol is this?

• causes instant death

• radioactive material

• harmful to animals

• acute toxicity

The picture represents

• low accuracy and low precision

• low accuracy and high precision

• high accuracy and low precision

• high accuracy and high precision