Show:
Measurement 1
Measurement 2
Variables
Experimental Design
Observation and Inference
100
What tool is used to measure length?
A ruler
100
What is the basic unit for length? What are 3 other units for length?
meters; millimeters, centimeters, kilometers.
100
Sam wants to see how the addition of salt affects the boiling temperature of water. What would be the independent variable in this investigation?
the addition of salt
100
Ms. Vigour is investigating whether Monarch caterpillars will eat any leaf or just milkweed. Write a scientific question for this investigation.
Example: Will Monarch butterflies only eat milkweed?
100
Observation or Inference? My T-shirt is wet.
Observation
200
What tool is used to measure temperature?
a thermometer
200
What is the basic unit for time? What are 3 other units for length?
seconds; minutes, hours, days, weeks, months.
200
Jessica is planning an investigation to find out which fertilizer produces the most flowers on her rose bush. What is the dependent variable in this investigation?
how many flowers are on each bush
200
Ms. Vigour is investigating whether Monarch caterpillars will eat any leaf or just milkweed. Write a hypothesis for this investigation.
Examples: If Monarch butterflies are given different kinds of leaves, then they will only survive if they get fed milkweed. If Monarch butterflies are given different kinds of leaves, then they will survive no matter what kind of leaf.
200
Observation or Inference? There are 25mL in the graduate cylinder.
Observation
300
What tool is used to measure time?
A stopwatch
300
What is the metric unit for temperature?
degrees Celsius
300
Jonny is testing his remote control car to see which tires allow the car the travel fastest. What are two of the constants in this investigation (there are more than two answers)?
the remote control car, the surface of the road, the operator
300
Ms. Ellis observed that the butterflies in her garden favored the pink flowers. She predicted that more pink flowers would bloom. Is this a scientific question, a hypothesis or a conclusion?
A hypothesis
300
Observation or Inference? Everyone is wearing coats outside so it must be cold.
Inference
400
What tool is used to measure volume?
a graduated cylinder
400
What is the basic unit for volume? What is another unit for volume?
liters, milliliters
400
Ms. Monroe observed that her Sprite lost its carbonation when it sat on her desk during the day. She wanted to investigate how long it would take to lose its carbonation so she set out a Coke in the morning, a Sprite in the afternoon, a Diet Coke in the evening and checked back the next day to see if they were flat. Is this a fair test? Explain why.
No it is not, because she changed two variables - the soda and the amount of time.
400
Ms. Ellis designed an investigation to see which flower in her garden reproduced the fastest. She counted the flowers on each plant every day for two weeks. After two weeks she observed that there were 25 more pink flowers, 3 more purple flowers and 10 more orange flowers. What can you conclude from her data?
That the pink flowers reproduced fastest.
400
Observation or Inference? I have a red bump on my arm that itches, I must have been bitten by a mosquito.
Inference
500
What tool is used to measure mass?
triple-beam balance
500
What is the basic unit for mass? What is 1 other unit for mass?
grams, kilograms.
500
Maggie is watering her plants and notices that the plants in the shade are not growing as well. She wants to design an investigation to learn more about this effect. What would her independent variable be? What would be dependent variable be?
Independent: the amount of sunlight Dependent: the amount of growth
500
Ms. Evatt designed an experiment to see if the amount of water in soil affects the germination of seeds. She germinated seeds in solutions that were 25% water, 50% water, 75% water and 100% water. She observed that all the seeds germinated. What conclusion can be drawn from her investigation?
The amount of water in soil does not affect germination of seeds.
500
There are 24 students in my science class.
Observation