Investigations Experiments

Quiz
•
Other Sciences
•
8th Grade
•
Hard
Charles Martinez
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Juan is interested in finding out whether hummingbirds are attracted to some flowers more than others. In what order should Juan perform the steps of his experiment?
- Create a garden of different flowers.
- Observe how many times hummingbirds visit each flower.
- Write a report on his findings.
- Record his observations.
- Make a prediction about which flowers hummingbirds are most attracted to.
1 2 3 4 5
3 1 4 2 5
1 5 2 4 3
1 2 5 4 3
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Assume that a recent study found that some chemicals in hot dogs caused clogged arteries in rats. In a newspaper article reporting the study, a consumer group concluded that people should eliminate hot dogs from their diet. Which of the following is an appropriate question to ask regarding this conclusion?
I. Do rats and humans react the same way to the chemicals?II. How much of the chemicals were the rats exposed to?
III. What type(s) of hot dogs were used in the study?
I
I & III
II
I, II, and III
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Jordan observes that the roses in his garden seem to grow to different heights depending on their location in the garden. He does an experiment to test whether light availability affects the height that his rose bushes grow. He hypothesizes that rose bushes that receive the most direct sunlight will grow the tallest. The results from his experiment are shown below.
Rose Bush Hours of Direct Sunlight Average Height
Group A 0 hours 3 ft
Group B 4 hours 5 ft
Group C 8 hours 6 ft
Which is true about Jordan's results?
Jordan's results do not support his hypothesis.
Jordan's results are not related to his hypothesis.
Jordan's results support his hypothesis.
Jordan's results prove that all plants grow best in the Sun.
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Jami is doing an experiment to find out how temperature slows down or speeds up the sprouting of bean seeds. To prepare for the experiment, she plans to put soil into three cups and place six seeds in each cup.
When Jami performs the experiment, which of the following is the only condition she should change for all of the cups of beans?
the temperature
the amount of water
the amount of sunlight
the amount of fertilizer
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Raul wants to study how pot size affects the growth of plants. To do this, he intends to purchase three different pots of varying diameter. Then, he will fill each pot with the same amount of soil and plant different kinds of flowers in each pot. Finally, he will place the pots side by side in a sunny location and water each pot daily with the same amount of water.
Will Raul's experimental set-up produce valid results?
No; Raul doesn't have a testable hypothesis so the experiment is pointless.
Yes; Raul has a testable hypothesis so the experiment is valid.
No; Raul changes more than one variable so the results will be invalid.
Yes; Raul set up his experiment correctly so the results will be valid.
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Your teacher has asked you to perform an experiment to see if the shape of objects, alone, affects the motion of objects. Which of the following would be the best experiment to perform?
Apply the same amount of force to a ball, cylinder, cube, and pyramid, each of a different mass.
Apply the same amount of force to balls of different masses.
Apply different amounts of force to the same ball.
Apply the same amount of force to a ball, cylinder, cube, and pyramid, each of the same mass.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Why is bias a problem in a scientific investigation?
It will make the person doing the scientific investigation become ill.
It may cause the person doing the investigation to get inaccurate results.
It may cause the person doing the investigation to dislike doing it.
It will make any chemical reactions stop before they are finished.
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