Independent, dependent or control variable?
The type of surface is kept the same. Independent, dependent or control variable?
Control - it's kept the same.
What is an Inference ?
I think (based on an observation)
What is the correct format of a hypothesis?
If__,Then__, Because___
Qualitative or Quantitative?
The glass can hold 437 mL.
Quantitative
The ice cream is sweet. Is that an inference, hypothesis, or observation ?
Observation!
Growing plants using peat moss, soil, or orchid bark. Independent, dependent or control variable?
Independent - the growing medium is something you're changing.
Which is an inference?
A. The dog is barking
B. The dog is barking because she sees a squirrel.
B. The dog is barking because she sees a squirrel.
Which is a hypothesis?
A. If the rock is heated, then it will crack because of trace amounts of water inside the rock expanding into gas.
B. If I start talking too fast, then let me know.
A. If the rock is heated, then it will crack because of trace amounts of water inside the rock expanding into gas.
Qualitative or Quantitative?
The man is sweating.
Qualitative
The man is scared. Is that an inference, hypothesis, or observation?
inference
Measuring plant height. Independent, dependent or control variable?
Dependent - you're seeing how the plant height is affected by another (independent variable). You can't control this - you can only observe!
You seen a student smiling and holding a test paper. You infer that the student..?
The student got a good grade.
What is an a hypothesis?
An educated guess or prediction of what will happen and why.
True or false: An observation must use one of your 5 senses - seeing, hearing, smelling, tasting, touching.
True!
The dog is drooling because he wants your hot dog! Is that an inference, hypothesis, or observation ?
Inference
Taking a measurement every 2 minutes. Independent, dependent or control variable?
Independent - you are looking at how measurements change over time. You can't control time but you are observing how a measurement changes over time.
True or false?
An inference is always based on evidence
True !
True or false:
A hypothesis must be testable ?
True!
Qualitative or Quantitative?
The shirt is an XL.
Quantitative - it's not a number but it is a measurement.
The added nutrients in fertilizer will cause a plant to grow taller. Is that an inference, hypothesis, or observation ?
Hypothesis! Notice we can rewrite as:
If fertilizer is used, then the plant will grow taller, because of the added nutrients.
It's still a testable question.