Which of the following is an example of quantitative data?

In 1927, the geneticist Hermann Muller exposed flies to ultraviolet light. He found that the flies’ offspring displayed many mutations. He concluded that the ultraviolet rays caused chromosome breakage, which caused the mutations.

What was the independent (manipulated) variable in Muller's experiment?

Anita hypothesizes that if plant seeds are soaked in water, then the seeds will sprout faster. How should Anita conduct her controlled experiment to obtain results that will allow her to support or to reject her hypothesis?

Juan observes that a potted plant on his desk is bending toward the nearest window. Which hypothesis would be best for Juan to investigate the reason the plant is bending?

How many variables are manipulated (changed) in a controlled experiment?

Nick wanted to see how high identical ice cubes would float in different temperatures of water. What is the DEPENDENT variable?

Tim and Moby increased the amount of sunlight that plants C & D received to determine if those plants would grow taller than plants A & B. What type of variable is the sunlight?

Tim and Moby increased the amount of sunlight that plants C & D received to determine if those plants would grow taller than plants A & B. What type of variable is plant growth?

Tim and Moby increased the amount of sunlight that plants C & D received to determine if those plants would grow taller than plants A & B. All plants received the same amount of water. The water is a _________.

In a controlled experiment, the _______________ changes in response to another variable and is observed and measured?

A factor in a controlled experiment that is the same in the control group and the experimental group is a/n _________.

What is the first step in the Scientific Method?

In a controlled experiment, why is only one variable manipulated and tested at a time?

A testable explanation for a set of observations or an identified problem.

Well tested explanation that unifies a broad range of

observations and hypotheses and enables scientists to make accurate predictions about new situations.

You decide to perform a controlled experiment to determine if a paper airplane made from notebook paper will fly faster than a paper airplane made from construction paper. Choose the best hypothesis.

The group in an experiment that is not changed and is used as a comparison.

True or False: Scientists conduct controlled experiments to prove their hypotheses.

In a controlled experiment, the _______________ is deliberately changed or manipulated to test a hypothesis.

The act of using the five senses to notice and to describe processes and events in a careful and organized way.

Evidence and information that is gathered while conducting a controlled experiment or investigation.

Tim and Moby increased the amount of sunlight that plants C & D received to determine if those plants would grow taller than plants A & B. The plants that did not receive more sunlight is the ________________________.

A logical interpretation based on what scientists already know.

Preference or point of view that is personal rather than scientific.

The scientific study of life is ________________.

Why is it important for scientists to share their results after they have finished conducting a controlled experiment?

_____________ is the organized way of gathering and analyzing evidence about the natural world.

True or False: It is important to remain objective, to avoid bias, and to collect as much quantitative data as possible when conducting a controlled experiment.

Which of the following is an example of qualitative data?