Which of the following is not a variable in an investigation designed "how much light is needed for a spider plant to grow?"
A.type of plant
B.amount of water
C.source of light
D.amount of light
B?
Which of the following is the best investigation question?
A.Do heavier rocks fall faster than light rocks?
B.Why is the sky blue?
C.Which paper towel is better?
D.What is the best fertilizer for all plants?
B?
For the 2nd one I think it's B or A
For the first question, "Which of the following is not a variable in an investigation designed 'how much light is needed for a spider plant to grow?'", the answer would be B. amount of water. To determine the answer, you need to consider the purpose of the investigation, which is to determine the amount of light needed for a spider plant to grow. In this scenario, the type of plant (A), source of light (C), and amount of light (D) are all relevant variables that can affect plant growth. However, the amount of water (B) is not directly related to the investigation, as the focus is on determining the necessary light conditions for growth.
For the second question, "Which of the following is the best investigation question?", the answer would be A. Do heavier rocks fall faster than light rocks? To determine the best investigation question, you need to evaluate each option. Option B, "Why is the sky blue?", is more of a knowledge-based question rather than an investigation question. Similarly, option C, "Which paper towel is better?", does not specify the purpose or criteria for determining what makes one paper towel better than another. Option D, "What is the best fertilizer for all plants?", might be too broad as different plants may have different fertilizer requirements. On the other hand, option A proposes a clear investigation with a specific focus on comparing the falling speed of heavier and lighter rocks.