Quiz - Safety and Scientific Investigation

Based on the problem being investigated and the data collected, what type of investigation did the students conduct?

• Descriptive

• Comparative

• Experimental

• Conclusive

What type of investigation did the students conduct?

• A. Descriptive

• B. Comparative

• C. Experimental

• D. Conclusive

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

What was the independent variable in this investigation?

• The height of the ramp

• The distances traveled by the marbles during the three trials

• The mass of the marbles

• The color of the marbles

Tags

NGSS.MS-PS2-2

All of the following statements concerning when and how to use an eyewash are true EXCEPT:

• Flush the eyes with water for a minimum of 15 minutes.

• Keep the eyes closed while flushing with water.

• Know the location and how to use the eyewash before handling chemicals.

• After flushing with water, the school nurse should examine the eyes to determine if further treatment is needed.

A fire blanket is used for:

• Smothering flames when someone’s clothing or hair catches fire

• Absorbing chemical spills

• Extinguishing large fires

• Protecting clothing and skin from chemical burns

To use a fire extinguisher properly, you must do all of the following EXCEPT:

• Pull the pin that releases the trigger.

• Point the hose or nozzle toward the base of the flames.

• Spray the chemicals at the base of the flames using a back and forth sweeping motion.

• Only use the fire extinguisher on large fires.

What type of investigation did the student design and conduct?

• Descriptive

• Comparative

• Experimental

• Conclusive

Tags

NGSS.MS-PS1-2

In this investigation, what was the dependent variable?

• The amount of salt added

• Whether the saltwater solution conducted electricity or not as indicated by the light bulb

• The type of battery used

• The amount of time it took for the salt to dissolve

Tags

NGSS.MS-PS1-2

Which combination of safety equipment below should you use or be prepared to use when working with potentially harmful chemicals during an investigation?

• Goggles, Apron, Eyewash/Face Wash, Fire Blanket

• Gloves, Apron, Eyewash/Face Wash, Fire Blanket

• Goggles, Gloves, Fire Blanket, Fire Extinguisher

• Goggles, Gloves, Apron, Eyewash/Face Wash

Tags

NGSS.MS-PS1-2

The following statements are true for all types of scientific investigations EXCEPT:

• A. All investigations involve asking a well-defined question.

• B. All investigations include a testable hypothesis.

• C. All investigations involve making observations and collecting and recording data.

• D. All investigations involve analyzing data to propose reasonable explanations.