Unit 1 Concept 1

What does percentage error indicate?

• How accurate a measurement is compared to other measurements.

• How far off a measurement made in a lab is from the commonly accepted value.

• The difference between the experimental value and the accepted value.

• The precision of a measurement.

Callie measures her flower to be 31 cm tall, Jay measures his plant to be 45 cm tall, and Liam measures his plant to be 35 cm tall. What is the average height of their measurements?

• 31 cm

• 35 cm

• 37 cm

• 45 cm

What is the SI unit for temperature?

• Celsius

• Fahrenheit

• Kelvin

• Mole

Which formula correctly converts Celsius to Fahrenheit?

• °F = (°C * 9/5) + 32

• °F = (°C * 5/9) + 32

• °F = °C + 273.15

• °F = (°C - 32) * 9/5

What is the primary purpose of the "Reflect" step in the R.A.D.A.R. problem-solving method?

• To read the problem carefully.

• To analyze the given information.

• To check if the answer is reasonable and the question is answered.

• To diagnose the problem and make a plan.