Question
Which statement is true about a triple beam balance and spring scale?(1 point)
Responses
Both a triple beam balance and a spring scale are used to measure the weight of an object.
Both a triple beam balance and a spring scale are used to measure the weight of an object.
A triple beam balance is used to measure the weight of an object, and a spring scale is used to measure the mass of an object.
A triple beam balance is used to measure the weight of an object, and a spring scale is used to measure the mass of an object.
Both a triple beam balance and a spring scale are used to measure the mass of an object.
Both a triple beam balance and a spring scale are used to measure the mass of an object.
A triple beam balance is used to measure the mass of an object, and a spring scale is used to measure the weight of an object.
A triple beam balance is used to measure the mass of an object, and a spring scale is used to measure the weight of an object.
28 answers
Both a triple beam balance and a spring scale are used to measure the weight of an object.
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Why is agar medium used in Petri dishes?(1 point)
Responses
It makes bacteria appear larger.
It makes bacteria appear larger.
It sterilizes the petri dish.
It sterilizes the petri dish.
It helps microorganisms grow.
It helps microorganisms grow.
It makes cells glow.
Responses
It makes bacteria appear larger.
It makes bacteria appear larger.
It sterilizes the petri dish.
It sterilizes the petri dish.
It helps microorganisms grow.
It helps microorganisms grow.
It makes cells glow.
It helps microorganisms grow.
Which statement accurately describes test tubes and beakers?(1 point)
Responses
Test tubes are better for transferring liquids than beakers.
Test tubes are better for transferring liquids than beakers.
Beakers can be held over a flame; test tubes cannot.
Beakers can be held over a flame; test tubes cannot.
Beakers have liquid volume (mL) markings on the side of them; test tubes are unmarked.
Beakers have liquid volume (mL) markings on the side of them; test tubes are unmarked.
Beakers and test tubes both have rounded bottoms.
Responses
Test tubes are better for transferring liquids than beakers.
Test tubes are better for transferring liquids than beakers.
Beakers can be held over a flame; test tubes cannot.
Beakers can be held over a flame; test tubes cannot.
Beakers have liquid volume (mL) markings on the side of them; test tubes are unmarked.
Beakers have liquid volume (mL) markings on the side of them; test tubes are unmarked.
Beakers and test tubes both have rounded bottoms.
Beakers have liquid volume (mL) markings on the side of them; test tubes are unmarked.
Which is a disadvantage of using Celsius thermometers?(1 point)
Responses
They can measure the boiling point of a liquid.
They can measure the boiling point of a liquid.
They can take accurate temperature readings.
They can take accurate temperature readings.
They can contain mercury that is very harmful to humans.
They can contain mercury that is very harmful to humans.
They can measure temperatures of liquids quickly.
Responses
They can measure the boiling point of a liquid.
They can measure the boiling point of a liquid.
They can take accurate temperature readings.
They can take accurate temperature readings.
They can contain mercury that is very harmful to humans.
They can contain mercury that is very harmful to humans.
They can measure temperatures of liquids quickly.
They can contain mercury that is very harmful to humans.
What safety equipment is often the minimum requirement for personal protection in a laboratory?(1 point)
Responses
gloves
gloves
safety goggles
safety goggles
fire blanket
fire blanket
apron
Responses
gloves
gloves
safety goggles
safety goggles
fire blanket
fire blanket
apron
safety goggles
If you were going to be handling harmful chemicals in a lab, what safety equipment would you use to protect your eyes and face?(1 point)
Responses
gloves
gloves
safety glasses
safety glasses
chemical splash goggles
chemical splash goggles
apron
Responses
gloves
gloves
safety glasses
safety glasses
chemical splash goggles
chemical splash goggles
apron
chemical splash goggles
What should you do if you get chemicals into your eyes in a laboratory?(1 point)
Responses
Wipe the chemicals off your face.
Wipe the chemicals off your face.
Go home and take a shower
Go home and take a shower
Locate and use an eye/face wash.
Locate and use an eye/face wash.
Put on safety goggles.
Put on safety goggles.
Responses
Wipe the chemicals off your face.
Wipe the chemicals off your face.
Go home and take a shower
Go home and take a shower
Locate and use an eye/face wash.
Locate and use an eye/face wash.
Put on safety goggles.
Put on safety goggles.
Locate and use an eye/face wash.
What safety equipment would you use to extinguish a fire that is on a person?(1 point)
Responses
apron
apron
fire blanket
fire blanket
fire extinguisher
fire extinguisher
eye/face wash
eye/face wash
Responses
apron
apron
fire blanket
fire blanket
fire extinguisher
fire extinguisher
eye/face wash
eye/face wash
fire blanket
What is the first step to take in order to operate a fire extinguisher?(1 point)
Responses
Squeeze the handle on the top to release the foam-like solution inside the extinguisher.
Squeeze the handle on the top to release the foam-like solution inside the extinguisher.
Aim the nozzle at the fire.
Aim the nozzle at the fire.
Sweep the extinguisher from side to side until the fire is put out completely.
Sweep the extinguisher from side to side until the fire is put out completely.
Pull the pin to break the seal.
Responses
Squeeze the handle on the top to release the foam-like solution inside the extinguisher.
Squeeze the handle on the top to release the foam-like solution inside the extinguisher.
Aim the nozzle at the fire.
Aim the nozzle at the fire.
Sweep the extinguisher from side to side until the fire is put out completely.
Sweep the extinguisher from side to side until the fire is put out completely.
Pull the pin to break the seal.
Pull the pin to break the seal.
What are oral instructions?(1 point)
Responses
directions that are written down
directions that are written down
directions for complex tasks
directions for complex tasks
directions that are easy to understand
directions that are easy to understand
directions that are spoken aloud
Responses
directions that are written down
directions that are written down
directions for complex tasks
directions for complex tasks
directions that are easy to understand
directions that are easy to understand
directions that are spoken aloud
directions that are spoken aloud
Which situation would best be addressed by giving oral instructions?(1 point)
Responses
explaining how to do an experiment
explaining how to do an experiment
giving an opinion about a drawing
giving an opinion about a drawing
telling a story for fun
telling a story for fun
comparing ideas about a book
Responses
explaining how to do an experiment
explaining how to do an experiment
giving an opinion about a drawing
giving an opinion about a drawing
telling a story for fun
telling a story for fun
comparing ideas about a book
explaining how to do an experiment
Which step is important for following oral instructions?(1 point)
Responses
describing each step clearly
describing each step clearly
listening carefully
listening carefully
explaining what materials are needed
explaining what materials are needed
establishing a purpose
Responses
describing each step clearly
describing each step clearly
listening carefully
listening carefully
explaining what materials are needed
explaining what materials are needed
establishing a purpose
listening carefully
If you are giving instructions and a listener is confused about a step, what should you do?(1 point)
Responses
Try saying things in a new way.
Try saying things in a new way.
Do the step yourself.
Do the step yourself.
Speak with more confidence.
Speak with more confidence.
Start over until the listener understands.
Responses
Try saying things in a new way.
Try saying things in a new way.
Do the step yourself.
Do the step yourself.
Speak with more confidence.
Speak with more confidence.
Start over until the listener understands.
Try saying things in a new way.
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