The Scientific Method

The scientific method is a series of...

• questions that people ask

• steps taken to test an idea

• inferences that people figure out

• observations that scientists make

The first step of the scientific method is to ask a question or pose a problem. Re-order the remaining steps (remember People In Hawaii Eat Delicious Coconut)

• form a hypothesis

• gather and analyze data

• form a conclusion

• carry out an experiment

• do research/ gather info

Select the two answers that best answer the question:

Why do scientists usually carry out multiple trials or repeat an experiment?

• to verify the results

• to confirm the results

• to see if they messed up

• to see if they are right or wrong

Select all that are true about a hypothesis

• a question that can be answered

• a prediction that can be tested

• often has an "If...,then..." format

• often starts with "What if..." and ends with a question mark,"?".

The word variable comes from the word "to vary." To vary means to

• change

• have a lot

• hold constant

• be extreme

When carrying out an experiment, how many variables can the scientist choose to change as the experiment is being carried out?

• none, everything is held constant

• 1

• 2

• 3

Select all that are true about the independent variable

• the condition the scientist chooses to change

• the cause of an effect

• the result that is measured after making a change

• must be held constant the whole experiment

Select all that are true about the dependent variable

• the scientist chooses to change it

• the effect of making a change

• it depends on what the scientist changes

• must be held constant

• sometimes is constant (there is no effect from the change)

"State the relationship" between two variables means as the ​ (a)   increases, the ​ (b)   increases/decreases/stays the same

• independent variable
• dependent variable
• control
• data

Which could be a hypothesis?

• If the temperature of the gas increases, then the pressure will increase

• What will happen if you increase the temperature of a gas?

• I wonder what happens to gases at different temperatures

• Are the temperature and pressure of a gas related?