Hypotheses, Variables, and Scientists, oh my!

Hypotheses, Variables, and Scientists, oh my!

The proper format for a hypothesis is the "if....then..." format

• For example:

• IF I let Sage watch Cocomelon, THEN she will stop crying

You can identify the INDEPENDENT variable and the DEPENDENT variable using your Hypothesis

• If ---(Independent Variable)

• Then --- (dependent variable)

Multiple Choice

What is the independent variable in this question? "Do soccer players score more goals if they are on their home field?"

• Yes

• How many goals they score

• No

• If they are on their home field or not.

Multiple Choice

What is the dependent variable in this hypothesis? " Does drinking orange juice help you get over the flu faster?"

• Having the flu

• How long you have the flu

• If you drink orange juice or not

Multiple Choice

What is the independent variable in this hypothesis? " Does drinking orange juice help you get over the flu faster?"

• Having the flu

• How long you have the flu

• If you drink orange juice or not

Multiple Choice

In an experiment, the factor that we measure is called the

• independent variable

• dependent variable

• conclusion

• controlled variable

Multiple Choice

In an experiment, the one variable that is changed is called the

• dependent variable

• independent variable

• experimental variable

• controlled variable

Multiple Choice

Which of the following hypotheses is written correctly?

• If I freeze a tennis ball, then it will not bounce as high.

• If a tennis ball is frozen, it won't bounce as high as one that is not frozen.

• Frozen tennis balls will not bounce as high.

• If I heat up a tennis ball it will bounce high

Multiple Choice

If _______ looks at animals under a microscope then he will see they are made of cells

• Schleiden

• Schwann

• Hooke

• Leeuwenhoek

Multiple Choice

Which HYPOTHESIS is properly formatted for SCHLEIDEN?

• If I look at plants under a microscope then I will see they are all made of cells

• If I look at animals under a microscope then I will see they are not made of cells

• Plants have cells

Multiple Choice

If I have two cells then that means they came from a pre-existing cell. Whos hypothesis is this?

• Hooke

• Virchow

• Schleiden

Multiple Choice

If I look at pond water under a microscope then I will see tiny single celled organisms. Whos hypothesis is this?

• Leeuwenhoek

• Hooke

• Schleiden

Variables

• IV - What I do / change on purpose

• DV - depends on IV. What we measure

• Constant(s) - Kept the same

• Control - the NORMAL group

Multiple Choice

Schleiden wants to see how well sunflowers grow in the shade. What is his independent variable?

• Placing the sunflowers in the shade

• Placing the sunflowers in the sun

• How much the sunflowers grow

Multiple Choice

Schleiden wants to see how well sunflowers grow in the shade. What is his CONTROL variable?

• Placing the sunflowers in the shade

• Placing the sunflowers in the sun

• How much the sunflowers grow