Sec 1 WA1 Revision

Which the following is NOT science?

• The study of fossils to find out about prehistoric animals.

• The study of star constellations to predict the future of one’s life.

• The study of chemicals and how they react with one another.

• The study of the interactions between energy and matter.

Which is an example of quantitative data?

• Mr Lim is stronger than Mr Tan.

• John is 15 cm taller than Bryan.

• Mrs Tan has brown hair but Mrs Wong has black hair.

• The cake that Miss Wong made is very sweet.

Which is the correct sequence in carrying out a scientific investigation?

A. Conducting the experiment

B. Developing explanations and solutions

C. Identifying the problem

D. Generating a hypothesis

E. Communicating the findings

• A,B,C,D,E

• C,A,B,D,E

• C,D,A,B,E

• D,C,A,B,E

A testable explanation to a problem that has not yet been tested is known as a / an

• question

• hypothesis

• theory

• fact

The variable that is measured in an experiment is called

• independent variable

• dependent variable

• constant variable

• There is no such variable

Miss Tan's hypothesis is, "The closer a student stays to school, the later they will arrive for school".

To test this, which variable should be changed?

• time taken by student to reach school

• mode of transport taken by student

• frequency of bus arrivals in front of the school

• distance which student stays from school

Elton wants to compare the rate of evaporation of two liquids, water and alcohol. What must he do to ensure a fair test?

• Use equal volumes of liquid

• Use a stopwatch to measure the time taken for evaporation

• Let the liquids evaporate in a warm place

• Carry out the experiment near the Bunsen burner

Which of the following is NOT a SI unit?

• K

• km

• kg

• s

What is the name of this laboratory apparatus?

• retort stand

• tripod stand

• test tube holder

• metal rack

Name one apparatus that can be used to measure the volume of liquids: