Show:
Variables
Scientists And The Natural World
Controlled Experiments
Scientific Tools
What Are Types of Investigations
100
What is a variable?
Any item, factor, or condition that could be controlled or changed.
100
what do scientists have to do in order to get an accurate conclusion?
Repeat there investigation at least 3 times.
100
Ben says that he left 2 plants in the window for a long time then went back and measured each one then stopped doing the observation he calls this a controlled experiment. True or False?
False.
100
What tool do scientists use to see cells closer?
Microscope.
100
What is an experiment.
A scientific procedure in order make a discovery.
200
Why do we use variables?
To change the outcome of the experiment.
200
What is a prediction?
A statement based on information in the future.
200
What is the difference between a controlled experiment and regular experiment?
In a controlled experiment the only variable that can be changed, is the independent variable.
200
What do scientists use to measure weight?
pan balance.
200
There are 3 ways scientists can study an object, what are these?
Experiments, observations, and Models.
300
What is an independent variable?
A variable that is manipulated.
300
what is a hypothesis?
A scientific prediction.
300
Joe throws a paper airplane at a fan to see if it will come back. Then Joe does this again with the fan off is this controlled experiment?
Yes.
300
What tool measures time accurately?
A stopwatch.
300
Does an investigation have to follow the scientific method?
No it does not.
400
What is a dependent variable?
A variable that can be observed or measured in an experiment.
400
What is the difference between an observation and a prediction?
An observation is something you are observing in the present, and a prediction is a scientific guess.
400
What does a Dependant variable do in a controlled experiment?
The same thing as always, you can measure it and observe it. This is a trick question.
400
What tool is similar to a ruler?
A yardstick or meterstick?
400
What do you call an investigation when you don't observe anything?
An investigation.
500
How many types of variables are there.
3
500
Diego gets two bowls of water, and puts them outside. He puts one in the shade, and one in the sunlight. He comes back and he sees that the water in the one in the sunlight evaporated but the water in the shade has not. What can he conclude?
The one in the sun was exposed to higher temperatures, so it evaporated faster.
500
what is a controlled experiment?
An experiment where only the independent variable is allowed to be changed.
500
What tool helps get more precise measurements?
Metersticks.
500
list the scientific process (does not have to be in order)
Make an observation Form a question form a Hypothesis Conduct a Experiment Analyse the data and draw a conclusion