REVIEW 1st quarter

Which is of the following describe scientific investigation?

• Scientific investigation is solving scientific problems through a step-by-step procedure.
• Scientific investigation is solving problems based on personal conclusions.
• Scientific investigation is solving problems based on data.
• Scientific investigation is solving problems by guessing.

SpongeBob’s favorite shirt was badly stained He wanted to remove the stain and make it clean. He asked his friends and gathered two options. One friend told him to use detergent soap. Another told him to use liquid soap. He then applied the options he gathered The liquid soap removed the stain and SpongeBob was very happy that his shirt was cleaned. What is the independent variable in the given situation?

• the amount of detergent
• the type of detergent
• the stain removed
• the type of shirt

Which of the following shall be considered in performing an experiment?

• Identify the variables in the experiment.
• Observe and record data based on results.
• Use multiple samples to show accuracy and validity.
• All the choices are correct.

In the Scientific ways of solving problems acronym PDHECA, what does A stands for?

• analysis
• application
• analogy
• abstract

What is the proper way of writing a hypothesis?

• Start by having a wild guess.
• Write a guess out of suggestion.
• Formulate guess out of an observation.
• All choices are correct.

Which of the following is the proper way of making a conclusion?

• Conclude the results that you wanted to prove only.
• Conclude based on the opinion of other people.
• Conclude based on results of experimentation.
• Conclude based on opinion.

In scientific investigation which is described as an educated guess?

• hypothesis
• scientific investigation
• conclusion
• experimentation

What are we going to use to identify the problem?

• senses
• prediction
• data
• experiment

Which of the following is an example of a mixture?

• air
• magnesium chloride
• ron rod
• gold bar

What is the simplest form of matter that cannot be broken down to anything simpler?

• element
• compound
• solution
• colloids