Unit Test — Unit test Answers

Analyze the graph.

Ingrid wrote the hypothesis below.If the temperature of a liquid increases, the density of the liquid decreases because the particles move farther apart.What are the variables in her hypothesis?

The table shows results of an experiment that was replicated.

The idea that people behave in odd ways on a full moon is an example of

Which is a scientific claim?

Which describes data that is faked or misplaced?

The results of a dart game were precise but not accurate. The accepted value of the game was the center of the dartboard.

A class is using marshmallows to demonstrate different chemicals’ properties by heating and cooling the marshmallows. Which student is practicing bad laboratory safety?

Material safety data sheets are used to give the information about a solvent. The excerpt below is part of an MSDS.

Hallie takes notes in class as shown below.Developed through making observations About the natural world Observation → question → hypothesis → experiment

Which is caused by distracted drivers and may most likely be reduced by brain-powered cars?

Read the passage about the health risks of single-load liquid laundry packets.These packets are filled with concentrated, toxic chemicals. A 7-month-old in Florida died from swallowing the soap. Several soap and detergent companies are conducting studies to address these safety concerns; they want to reduce toxicity and to make the packets look less like candy. The U.S. Consumer Product Safety Commission (CPSC) is also performing studies to build more safety into these products.

Which microscope is the most powerful and can map the atoms on the surface of an object?

Nami conducts an investigation on plants. She places a grow light on a timer to give the plants different amounts of light to see if this would affect their growth. Which term describes the amount of light in this investigation?

What is a main reason why the scientific model of atoms is considered a theory rather than a law?

Which is the SI base unit for mass?

Which kind of investigations allow for the control of variables?

Read the measurement.

Saul converts 2.392 hectoliters to liters. What should his new number be?

Hunter is in lab. He clears a spot on his lab bench to start working. He also puts his lab coat and goggles on. He then identifies where all of the safety equipment is. He notices his station is next to the fume hood, which ventilates the chemicals stored there. The noise of the fume hood was bothersome, so Hunter turned it off.Which could be an error in his set-up?