Which of the following would be a testable hypothesis?(1 point)

Question

Responses

Plants produce glucose as the end product of photosynthesis.
Plants produce glucose as the end product of photosynthesis.

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.

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.

Answer 1

The testable hypothesis among the provided options is:

If acid is added to a solution, then the pH of the solution will go down.

This hypothesis is testable because it can be experimentally verified by adding acid to a solution and measuring the pH before and after the addition.

The other options either make broad statements that are less specific to be tested (e.g., the statement about plants producing glucose) or contain subjective elements (e.g., the relationship between healthiness and taste). The last option about the ball bouncing back has specific conditions that could vary, which makes it less straightforward for testing.

Answer 2

Which two adjectives describe a hypothesis?(1 point)
Responses

unobservable and untestable
unobservable and untestable

conditional and convincing
conditional and convincing

conclusive and concrete
conclusive and concrete

tentative and testable

Answer 3

The two adjectives that best describe a hypothesis are:

tentative and testable.

A hypothesis is often a preliminary statement that can be tested through experimentation and observation, and it is subject to change based on the results of those tests.

Answer 4

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 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.
Plants need water to grow, and they should also be exposed to sunlight.

I think salt water will help plants grow taller.

Answer 5

The best hypothesis for the experiment is:

If salt water is used to water plants, then the plants will not grow as tall as those watered with tap water.

This statement clearly expresses a testable relationship between the independent variable (the type of water used: salt water vs. tap water) and the dependent variable (the growth of the plants measured by height), making it a strong hypothesis for scientific investigation.

Answer 6

A student hypothesizes that increased sunlight will accelerate the growth of an avocado tree. How can the student test their hypothesis?(1 point)
Responses

Record the temperature and humidity in the area where the avocado trees are growing.
Record the temperature and humidity in the area where the avocado trees are growing.

Compare the growth rates of avocado trees exposed to varying amounts of sunlight over several weeks.
Compare the growth rates of avocado trees exposed to varying amounts of sunlight over several weeks.

Measure the height of avocado trees once after exposing them to sunlight for a single day.
Measure the height of avocado trees once after exposing them to sunlight for a single day.

Read articles about the effect of sunlight on photosynthesis and avocado tree growth.

Answer 7

The best way for the student to test their hypothesis is:

Compare the growth rates of avocado trees exposed to varying amounts of sunlight over several weeks.

This method allows for a controlled experiment where the student can measure growth over time under different sunlight conditions, providing concrete data to support or refute the hypothesis.