Bio1A Test 1 Review

A student wants to perform a science experiment about plants. He wants to know if a certain type of soil will make plants grow taller. Each pot will receive a different type of soil, but will get the same type of seed, water amount, and sunlight amount.What is the Independent Variable in this story?

• Amount of sunlight

• How tall the plant will grow

• Amount of water

• Type of material the plant is growing in

What do you measure for results (outcome)?

• Dependent variable

• Hypothesis

• Experimental Group

• Constants

If an animal shelter wants to see if a certain dog food causes a dog to gain weight, which of the following would NOT be a constant?

• Type of dog food given

• Amount of dog good given

• Time of day food is given

• Amount of exercise dog is given

This bar graph shows the number of cheeseburgers sold at McYummies drive thru last week. Study the graph and answer the following question.

What was the maximum number of burgers sold, and on which day was this?

• 30 burgers on Tuesday

• 60 Burgers on Thursday

• 20 Burgers on Thursday

• 25 Burgers on Monday

Which of the following is not an example of quantitative data?

• Temperature

• Speed

• Height

• Texture

Why do many experiments include several trials instead of a single trial?

• Repetition of trials increases the accuracy of the results

• Repetition of trials decreases the sample size of the experiment.

• Repetition of trials makes data easier to analyze.

• It is not necessary to repeat trials

Quantitative data can be

• seen

• measured

• manipulated

• heard

How is a hypothesis different from a theory?

• A theory has evidence to back it up and a hypothesis is an educated guess as to what is going to happen.

• They are both the same. They both are guesses as to what happens in the natural world.

• A theory is an opinion about how something works but a hypothesis has scientific evidence to support it.

• A hypothesis is used in science and a theory is used in society.

Qualitative data uses

• a thermometer

• your different senses

• a test tube

• a ruler

A _ is a standard for comparison.

• hypothesis

• control

• dependent variable