1. Which of the following is a quantitative observation?
A. Lead is denser than aluminum
B. Uranium is a radioactive element.
C. Water boils below 100 0C on top of a mountain.
D. Fertilizers help to increase agricultural production
2. Which of the following is the first step of scientific investigation?
A. forming a hypothesis. C. performing an experiment
B. asking question D. predicting the result of an experiment
3. A student who wants to study the effects of coffee grounds on plants sets up an experiment. Plant A gets no coffee grounds, plant B gets 5 mg of coffee grounds each day, and plant C gets 10 mg of coffee grounds each day. Which plant is the control group?
A. Plant A B. Plant B C. Plant C D. Plant D
4. A scientist did several analyses that includes acidity, malleability, and density. Identify which of the following steps the scientist must have conducted/used?
A. Testing a hypothesis C. Identifying the problem
B. Making a generalization. D. Formulating a hypothesis
5. Which of the following statements is a qualitative observation?
A. The candy is sweet. C. My laptop is 14 inches.
B. She is 154 cm tall D. My sister weighs 54 kilos.
