Biology Introduction

If plants are exposed to sunlight, then they will grow taller.
What part of the scientific method is this an example of?

• Procedure
• Hypothesis
• Question
• Results

What is the first step in the scientific method?

• Make an observation
• Design and conduct an experiment
• Make an hypothesis
• Share your results

A student is planning an experiment to find out how the height from which he drops a ball affects how high the ball bounces. The dependent variable is the _____.

• Diameter of the ball
• Force acting on the ball
• Height that the ball bounces
• Height from which the ball is dropped

An experiment for a new asthma medication was set up into two groups. Group one was given the new drug for asthma, while group 2 was not given anything. The group not given anything serves as a 

• control
• dependent variable 
• experimental variable
• constant

A student wants to test the effects of type of exercise on heart rate.  What is the dependent variable?

• heart rate
• type of exercise
• amount of exercise
• time of day exercise occurs

On what axis should the independent variable always be?

• X
• Y

Observations made during an experiment are called:

• data
• problems
• conclusions
• questions

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, what is the dependent variable?

• Type of plant
• Water, apple juice, milk
• Plant growth
• Color of the plant's leaves

According to the diagram, which question is being tested?

• Do plants grow taller when watered with salt water?
• How much fertilizer do plants need?
• Does fertilizer make plants grow taller?
• What is the best fertilizer to use?

A student hypothesized that robins prefer large birdhouses to small ones. He build four birdhouses of different sizes to test his hypothesis. What was the independent variable in the students study?

• The size of the birdhouse
• The number of birds in the house
• The location of the birdhouse
• The season of the year