MC-B E-SciRIM7 Scientific Investigation by AMC

Which of the following comes first in conducting scientific method?

• Make Conclusion

• Gather data and Analyze

• Identify Problem

• Hypothesize

Which of the following step should be done after making conclusion?

• Identify Problem

• Communicate result

• Make Hypothesis

• Analyze data

A group of students was asked to investigate how fast sugar dissolves in cold and in hot water. Refer to the following variables:

I. The temperature of water 

II. The amount of sugar

                         III. The length of time the sugar completely dissolved in hot water

                        IV. The length of time the sugar completely dissolved in cold water

What is the independent variable in the investigation?

• II, III  and IV

• II and III

•       I, II and III

• I only

A group of students was asked to investigate how fast sugar dissolves in cold and in hot water. Refer to the following variables:

                          I. The temperature of water                            

                          II. The amount of sugar

                          III. The length of time the sugar completely dissolved in hot water

                          IV. The length of time the sugar completely dissolved in cold water

What is the dependent variable in the investigation?

• I only

• II only

• II and III

• III  and IV

Aileen was assigned by her science teacher to find out the effect of stirring in the length of time a chocolate powder is dissolved in 100mL of tap water. What variables should she control to have a fair test?

             

I. amount of chocolate powder              III. amount of tap water in each cup

              II. manner of stirring  IV. length of time the chocolate is dissolved in tap water

• I, II and III

• I and III

•        III only

• IV only

Why variables that are not involved in an experiment should be kept constant?

• to get the results in shortest possible time

• for them not to affect the result

• to minimize needed materials

• to cut time used in the study

You were tasked to check if the liquid sample you have is a substance or a mixture during your science class. Which among these tests is the BEST way to do so in Science Laboratory?

                          I. Conduct a Color comparison                        III. Conduct a Boiling Test

                          II. Taste the unknown liquid sample               IV. Perform a Melting test

• I, II, III and IV 

• I, II and III

• I, II and IV

• I and III