UNIT 1 NATURE OF SCIENCE Vocab Variables Scientific

UNIT 1 NATURE OF SCIENCE

Vocab Variables Scientific Method 10 10 10 20 20 20 30 30 30 40 40 40 50 50 50 Labs Misc.

Question 1 - 10 • ____ is the systematic study of the natural world.

Answer 1 – 10 • Science

Question 1 - 20 • Scientists collect and record _____.

Answer 1 – 20 • Data

Question 1 - 30 A testable idea or explanation is know as a _____.

Answer 1 – 30 • Hypothesis

Question 1 - 40 • A variable that is changed on purpose is known as _____.

Answer 1 – 40 • Independent variable

Question 1 - 50 • A variable that changes as a result of the independent variable is known as _____.

Answer 1 – 50 • Dependent variable

Question 2 - 10 • In the heart rate lab, what was the independent variable?

Answer 2 – 10 • Running or exercising

Question 2 - 20 • Scientists are conducting an experiment in which they give people different amounts of Vitamin C to determine whether Vitamin C has an effect on how often a person gets sick. What is the dependent variable in this experiment?

Answer 2 – 20 • The number of times a person gets sick.

Question 2 - 30 • Scientists are conducting an experiment in which they give people different amounts of Vitamin C to determine whether Vitamin C has an effect on how often a person gets sick. What is the independent variable in this experiment?

Answer 2 – 30 • The amount of Vitamin C

Question 2 - 40 • Deandra designs an experiment to test how far a rubber band stretches when objects of different mass are suspended from it. She records her data in the chart. Which is the dependent variable? Mass (g) Stretches (cm) 10 1 20 2 30 3 40 4 50 4. 8

Answer 2 – 40 • The stretch in cm

Question 2 - 50 • In class Mr. Davison did a demonstration where we released a golf ball from different heights of a ramp. State the dependent and independent variables of this demo.

Answer 2 – 50 • IV- height of the ramp • DV- the height and speed of the ball bouncing

Question 3 - 10 • What is the first step in the scientific method?

Answer 3 – 10 • Asking a question, making a statement

Question 3 - 20 • What is the last step in the scientific method?

Answer 3 – 20 • Drawing conclusions

Question 3 - 30 • Tim tests a hypothesis that a fish will swim faster in warm water than in water at room temperature. Tim places Fred the Fish in 3 different temperatures of water, and also places Fred in the room temperature water. State Tim’s hypothesis in a complete sentence.

Answer 3 – 30 • Tim thinks that fish will swim faster in warm water than in water at room temperature.

Question 3 - 40 • True or false, drawing a conclusion during the steps of the scientific method should explain whether or not your hypothesis was correct.

Answer 3 – 40 • True

Question 3 - 50 • Shakira predicts that hot metal object do not cool at a constant rate. She experiments by heating a metal object and then allows it to cool to room temperature. She measures the temperature of the metal with ta thermometer every half hour, and she carefully records her results in her notebook. List 3 things Shakira does to test her hypothesis.

Answer 3 – 50 • Heats metal objects and allows them to cool at room temperature • Measures the temperature of the metal with a thermometer every half hour • Records her data in her notebook

Question 4 - 10 • What is the data in the student height lab?

Answer 4 – 10 • Students height in centimeters

Question 4 - 20 • What was the control in our soil lab?

Answer 4 – 20 • Distilled water

Question 4 - 30 • How did you make your observations in the What’s in the box lab?

Answer 4 – 30 • Students used their senses to make observations.

Question 4 - 40 • How did you record the data from our soil lab? What was the organizational tool called?

Answer 4 – 40 • Data table

Question 4 - 50 • What was the question we were trying to answer in the heart rate lab? Your answer must be in the form of a question.

Answer 4 – 50 • Will students heart rate change with exercise?

Question 5 - 10 • Astrology is an example of pseudoscience. Why is it considered a pseudoscience, unlike astronomy, which is a science? A. Because it is based on scientific method B. Because it is not based on the scientific method C. Because it can be easily replicated by other scientists D. Because it was much earlier that science

Answer 5 – 10 • B

Question 5 - 20 • Why do you need to use a control when testing variable in a scientific experiment?

Answer 5 – 20 • To have something to compare to as baseline data for the experiment.

Question 5 - 30 • Which of the following best supports a scientific explanation? A. B. C. D. Personal bias and the opinion of the scientist An hypothesis formed after initial observations The imagination and originality of the hypothesis Experimental data obtained by using technology to make objective measurements

Answer 5 – 30 • D

Question 5 - 40 • Which of the following is the best example of empirical evidence? A. The height in cm of our 6 th graders for the height lab B. The plan students made to collect the height of the 6 th graders C. The hypothesis students made for the heart rate lab D. The conclusion students made about the heart rate lab