Chapter Test: DOING SCIENTIFIC INVESTIGATIONS

It is a scientific skill that determines the obvious characteristics of an object or event using the five senses.

• Classifying

• Making inferences

• Making measurement

• Observation

Jestony is writing on his pad paper the distance covered by a walking turtle every one minute. What scientific skill is he doing?

• Classifying

• Making inferences

• Making measurement

• Observation

A man is sitting on a rock at the bank of the river and he is looking in the water. He might be lonely missing someone he loved. What scientific skills that the situation implies?

• Classifying

• Making inferences

• Making measurement

• Observation

In investigating a problem, it always begins with _____________ of things or event.

• classifying

• making inferences

• making measurement

• observation

The following are prerequisites in order to design an experiment. Which of these is the most important to understand well in order to attain a reliable result in your experiment?

• Scientific skills: Observing, inferencing, measuring & classifying

• Science processes: the problem, hypothesis, experimentation, analysing of data & conclusion

• Identifying variables: Manipulated, responding and controlled variables

• All of the above

The following statements are good Statement of the Problem that are worth doing an investigation, EXCEPT:

• What makes a paper airplane stay in air longer?

• What factor affects the speed of running toy car down an inclined plane?

• How does a bad spirit able to posses a person?

• Why is the gas in the LPG tank called liquefied when in fact it is a gas?

Jane went to the market to buy some goods with her friend Mae Ann. When she reached home she noticed that her wallet was gone. She uses scientific method to solve her problem. Which of the following intelligent guesses she formulated is NOT a good hypothesis:

• I lost my wallet in the market while we were buying goods.

• Mae Ann got my wallet.

• I had misplaced it in the house.

• Surely someone stole my wallet.

You want to know which of the two routes going to school is the shortest time to reach if you walk or use your bicycle. What experimentation would be best to use?

• Count every step from your house to school as you walk.

• Monitor the time of departure and arrival when using each route, then compare.

• Measure each distance using meter stick and compare.

• Measure the time travel on one of the route going to school and do the same on the other one as you go back from school.

Danny wants to know which shape of object (ring shape, hallow sphere, solid sphere, or disk) will reach the bottom first if he rolled them down on an inclined plane. Which data is the most appropriate that must be collected?

• The masses of the object.

• The length of the inclined plane.

• The amount of inclination of the incline.

• The time each object took to roll to the bottom.

If this variable is change, there would be an effect to the other variable.

• Controlled Variable

• Manipulated Variable

• Responding Variable

• Dependent Variable