WorksheetsFeedback Loops, error and bias
Total questions: 15
Worksheet time: 20mins
The following is an example of what type of feedback loop?
Negative Feedback Loop
Neutral Feedback Loop
Positive Feedback Loop
Global Warming Feedback Loop
If the environment gets cold, we will often shiver in order to increase body temperature. Is this an example of a positive or negative feedback loop?
positive feedback loop
negative feedback loop
Warmer temperatures cause an increased amount of water vapor and rain. Increased rainfall causes an increase in plant growth on Earth, which in turn could removes more carbon dioxide from the atmosphere. Less carbon dioxide in the air reduces global temperatures.
Identify the stimulus in this scenario from the list below.
Increase in plant growth on Earth
Higher levels of carbon dioxide being removed from the atmosphere
Warm temperatures
Reduction in global temperatures
Match the vocabulary word with this definition:
"The outcome causes the stimulus to be amplified"
positive feedback
negative feedback
response
stimulus
Match the vocabulary word with this definition:
"The outcome causes the stimulus to be counteracted and stabalized"
positive feedback
negative feedback
response
stimulus
When it doesn’t rain, the ground and plants dry out. With less water to evaporate during the long days of summer heat, the landscape gets hotter. Hotter temperatures accelerate evaporation, drying everything out even more.
Identify a response from this feedback scenario.
Low levels of precipitation
No rain
evaporation accelerates
formation of rain forests
A student wanted to find out if salt effects the time it takes for ice to melt. The student set up the investigation shown below. What is one source of error in this investigation?
Step 1: Use a balance to measure the mass of two ice blocks
Step 2: At 8 a.m, place one ice block in a sunny place
Step 3: Record the amount of time it takes the ice block to melt completely
Step 4: Apply salt to the second ice block.
Step 5: At noon, place the second ice block in the same sunny place
Step 6: Record the amount of time it takes for the salted ice block to melt
using a balance to measure mass
applying salt to only one of the ice blocks
placing the ice blocks at the same location
melting the ice blocks at different times of day
Scientists studying drought collect surface water and precipitation data in The United States between the years of 2000-2018. These scientists state that the intensity of world wide droughts has increased over the past 18 years.
What is a source of bias or error in this scenario?
Scientists did not collect data regarding the world yet they reported that the whole world was in a drought.
Scientists collected data for 18 years.
Scientists are studying drought.
Scientists collected data from the United States.
Identify the definition of the word error as it applies in scientific practice.
The difference between a measured value and a true value.
A mistake
A message seen on a computer
A spelling mistake
A retail store would like to assess customer feedback from in-store purchases. A feedback survey was emailed to all customers who bought from the company's online store only.
Identify the error or bias in this scenario.
The company surveyed costomers
The survey was not sent to people who made in-store purchases
This store values their customers
There is no error or bias in this scenario.
