Question 1

Question

A) A group of high school students are conducting a scientific investigation in their biology class to study the effect of different types of fertilizer on the growth of tomato plants. Which of the following statements about their investigation is correct? (1 point)

The type of fertilizer is the dependent variable and the independent variable is the type of tomato plant.

The type of tomato plant is the dependent variable and the independent variable is the type of fertilizer

The type of fertilizer is the dependent variable and the independent variable is the growth of the tomato plants.

The growth of the tomato plants is the dependent variable and the type of fertilizer is the independent variable.

B) A researcher studying the effects of a new fertilizer on crop yield concludes that the fertilizer is a significant improvement because it increases yield by 20%. This conclusion is most likely influenced by: (1 point)

A value judgment

Replication of the results in other studies.

Precise measurement of crop yield.

A well-designed experiment.

C) You can safely dispose of small amounts of used flammable gasoline by: (1 point)

Mixing it with water and throwing it away.

Burning it in a metal container outdoors.

Leaving it in the original container in your garage.

Taking it to a designated hazardous waste collection center.

D)

What is a primary hazard associated with this image?

(1 point)

They can cause fires and explosions if improperly stored.

They can cause severe burns to skin and damage to eyes.

They can release toxic fumes when mixed with water.

They can generate large amounts of dust, posing inhalation risks

E) A researcher finds that their data contradicts their initial hypothesis. What does this necessarily mean? (1 point)

Their experiment was poorly designed.

The hypothesis requires further investigation or revision.

The results are meaningless and should be discarded.

Their hypothesis is definitively wrong.

F) In astronomy, the theory of general relativity, proposed by Albert Einstein, has significant explanatory power. This prediction has been confirmed through numerous observations and experiments, demonstrating the theory's ability to accurately explain and predict complex astronomical phenomena. Why is this an example of explanatory power in a scientific hypothesis? (1 point)

It has been proven true in every experiment conducted.

It is based on mathematical calculations, which are always accurate.

It has been accepted by the scientific community for a long time.

It has accurately predicted complex astronomical phenomena.

G) Which of the following statements about theories is FALSE? (1 point)

Theories are well-substantiated explanations of natural phenomena.

Theories are just guesses and lack substantial evidence.

Theories provide a framework for understanding and predicting scientific observations. Theories can be modified or discarded in light of new evidence.

H) How can technology change a theory? (1 point)

By influencing the popularity of the theory

By completely disproving the theory

By changing the scientists working on the theory

By providing new tools to gather more precise data and evidence

I) Why is cell theory considered a scientific theory in biology? (1 point)

It involves the formation of all living things on the planet.

There is lots of evidence to support it.

Many scientists all over the world accept it as true.

It deals with topics that may or may not be testable in a laboratory.

J) Scientific theories and laws are both important in science, but they serve different purposes. Which of the following best describes the key difference between a scientific theory and a law? (1 point)

Theories explain why something happens, while laws describe what happens under certain conditions.

Theories are always based on experiments, while laws can be derived from observations. Laws are usually expressed mathematically, while theories are not.

Theories are more tentative than laws.

Answer 1

Here are the answers to the questions provided:

A) The growth of the tomato plants is the dependent variable and the type of fertilizer is the independent variable.

B) A value judgment

C) Taking it to a designated hazardous waste collection center.

D) They can cause fires and explosions if improperly stored.

E) The hypothesis requires further investigation or revision.

F) It has accurately predicted complex astronomical phenomena.

G) Theories are just guesses and lack substantial evidence.

H) By providing new tools to gather more precise data and evidence.

I) There is lots of evidence to support it.

J) Theories explain why something happens, while laws describe what happens under certain conditions.

If you have any further questions or need assistance, feel free to ask!