Steps
What do scientists do during the observation stage?
Look at an object and make observations using their 5 senses
If I blow air into a piece of gum, then it will create a bubble.
Yes, this is a hypothesis.
In an experiment, I tested to see if temeprature effected the speed that a ball rolls.
Is temperature the independent or the dependent variable?
Independent variable
Is this a good, or bad observation?
The ice cube is colder than the other ice cube.
Bad!
They didn't specify which ice cube was colder and they could be more specific in saying HOW much colder
Good or bad question?
What was it like when you were a child?
Bad!
This is more of a survey than a testable question. It would not make a good experiment.
What do scientists do douring the plan an experiment stage?
The red candle burned faster than the white candle
No, this is not a hypothesis.
What is the definition of a dependent variable?
The variable that you measure
Good or bad observation?
The turtle weighed 8 grams.
Good!
It is specific about how much the turtle weighed. It didn't just say "the turtle was heavy"
Good or bad question?
What types of metal are magnets most attracted to?
Good!
This is a testable question!
What do scientists do during the make a conclusion stage?
They sum up all of the data and tell whether their hypothesis was correct or incorrect
Confetti is made of paper
No, this is not a hypothesis.
What is the independet and dependent variable of this hypothesis?
If I eat more vegetables, then I will lose weight faster.
IV: Amount of vegetables
DV: Weight
Good or bad observation?
The pencil has many different colors including: Pink, silver, yellow, and black. It is made of wood.
Good!
Very detailed!
Good or bad question?
How does the amount of water effect plant growth?
Good!
This is a testable question!
What do scientists do during the make a hypothesis stage?
The come up with a guess of what they think the results of the experiment will be. This must be an if/then statement.
If I eat a lot of sugar, then I will get a stomach ache.
Whats the independent and dependent variable of this hypothesis?
If dry bread and moist bread are left in bags for two weeks, then the moist bread will grow mold more quickly than the dry bread
IV: Type of bread
DV: Amount of mold
Good or bad observation?
The trees were very pretty.
Bad!
This is an opinion, not an observation
Good or bad question?
How do rockets work?
Bad!
This is not a testable question. This is just finding an answer to something. I could easily google and get the answer.
What do scientists do during the analyze the data stage?
They look at the data and create easy to read graphs so others can easily see the results.
If I have a backpack and I bring it to school it will be SUPER cool.
No, this is not a hypothesis
What is the independent and dependent variable of this scenerio?
Melissa raises crickets at her pet store that she sells for reptile food. She thinks that crickets chirp more often when the temperature gets warmer. She decides to conduct an experiment to prove her theory.
IV: Temperature
DV: How often the crickets chirp
Good or bad observation?
There were fewer hours of daylight today than there was 30 days ago.
Good!
This is very specific!
Good or bad question?
Does temperature have an effect on a magnet's strength?
Good!
This is a testable question