Which of the following would be a testable hypothesis?(1 point)
Responses
Plants produce glucose as the end product of photosynthesis.
Plants produce glucose as the end product of photosynthesis.
If acid is added to a solution, then the pH of the solution will go down.
If acid is added to a solution, then the pH of the solution will go down.
Dropping a ball from a height of 10 m will cause it to bounce back up 5 m.
Dropping a ball from a height of 10 m will cause it to bounce back up 5 m.
If certain foods are healthy for you, then they should also taste good.
If certain foods are healthy for you, then they should also taste good.
Which two adjectives describe a hypothesis?(1 point)
Responses
conclusive and concrete
conclusive and concrete
unobservable and untestable
unobservable and untestable
conditional and convincing
conditional and convincing
tentative and testable
tentative and testable
A researcher wants to investigate the impact of salt water on the growth of plants. Which of the following would be the best hypothesis for this experiment?(1 point)
Responses
If salt water is used to water plants, then the plants will not grow as tall as those watered with tap water.
If salt water is used to water plants, then the plants will not grow as tall as those watered with tap water.
I think salt water will help plants grow taller.
I think salt water will help plants grow taller.
I will add salt water to plants and observe how they grow.
I will add salt water to plants and observe how they grow.
Plants need water to grow, and they should also be exposed to sunlight.
If salt water is used to water plants, then the plants will not grow as tall as those watered with tap water.
The second option, "If acid is added to a solution, then the pH of the solution will go down," would be a testable hypothesis.
The testable hypothesis among the given options is:
"If acid is added to a solution, then the pH of the solution will go down."
Hypotheses that can be tested are based on cause and effect relationships, where the independent variable (acid added to the solution) is expected to have an impact on the dependent variable (pH of the solution). To test this hypothesis, an experiment can be designed where different solutions are prepared and acid is added to each solution to observe the corresponding change in pH.