UPCAT SCIENCE REVIEW

Which of the following refers to a statement given to explain a certain phenomenon after spending time in conducting several investigations?

• conclusion

• hypothesis

• scientific law

• theory

All of the following has four significant figures except?

• 0.04420 g

• 42.00 g

• 1420 g

• 42.30 g

Which of the following statements is an inference?

• The aquarium is rectangular.

• The aquarium has floral design.

• The fish died because the water is dirty.

• The fish is floating on the surface of the water.

Based on the table, which of the following has the greatest density?

• A

• B

• C

• D

Which variable is manipulated by the researcher?

• Extraneous variable

• Dependent variable

• Independent variable

• Confounding variable

Jenny is only borrowing the cellphone chargers of her brother, sister and mother because she lost her phone charger. All chargers are of the same specifications as hers even though they have different phone brands. However, she would like to know which charger and charging cable combination would fill her phone battery the fastest. She used the following codes as her reference and charged her phone uninterrupted using the following combination. The charging time of the phone was then compared. Which of the following is the correct assignment of variables?

• IV: charging time/how fast DV: charger quality/compatibility EV: charger and charging cable combination

• IV: charger and charging cable combination DV: charging time/how fast EV: charger quality/compatibility

• IV: charger quality/compatibility DV: charger and charging cable combination EV: charging time/how fast

• IV: charger quality/compatibility DV: charging time/how fast EV: charger and charging cable combination

Which of the following sources of energy can increase the amount of pollutants in the air?

• Wind energy
• Hydropower
• Fossil fuels
• Solar power

Which is not true about gas particles?

• They have a definite shape.
• They are affected by temperature.
• They have mass.
• They are always in motion.

Identify the simple machine used in door knobs.

• Pulley and lever
• Inclined plane
• Screw
• Wheel and axle

Determine the scientific attitude portrayed on the statement below:

Scientists think of possible alternative solutions to problems they are working on. They find alternative materials to be used for experiment.

• resourcefulness

• intellectual honesty

• patience

• objectivity