1.2 Quiz H-Bio

The factors that stay the same or are constant throughout the experiment.

• Controlled Variable

• Dependent Variable

• Independent Variable

In a controlled experiment, how many independent variables can be tested at a time?

• one

• none

• two or more

• how ever many makes sense.

The one factor that a scientist changes during an experiment, also known as the manipulated variable.

• Controlled Variable

• Dependent Variable

• Independent Variable

This variable is the effect, it is the data that is analyzed to make a conclusion, also known as the responding variable.

• Controlled Variable

• Dependent Variable

• Independent Variable

Ben makes five paper helicopters with different wing lengths. He drops them the same way from a height of two meters for five trials each. He records the amount of time it takes for each helicopter to fall to the ground.

What is the dependent variable?

• Dropping the same way

• Wing Length

• Amount of time it takes the helicopter to hit the floor

• Dropping from the same height

Cindy wanted to find out how the amount of sunlight affects the growth of plants. She placed two tomato plants in 10 inch pots with potting soil and watered them ¼ cup each day. One plant was placed under a cardboard box and one was placed in the sunlight. She measured the growth of the plant each week for three weeks.

What is the independent variable?

• Using the same type of plant

• Each plant was placed in a 10 inch pot

• The growth of the plant

• Amount of sunlight

What is the part of an experiment that receives no experimental treatment and is the standard against which results are compared?

• Experimental group

• Control group

• Independent group

• Dependent group

A ______________ is an explanation of a natural phenomenon that is supported by a large body of scientific evidence.

• Law

• Theory

• Hypothesis

• Question

A ______________ is a fact that describes what will always happen.

• Law

• Theory

• Hypothesis

• Question

The purpose of scientists repeating other scientist's experiments is to _______________ the results.

• verify

• change

• steal

• weaken