---

Question 1:

Which of the following is an example of a testable hypothesis?

A) Dogs are smarter than cats.
B) Eating healthy food improves academic performance.
C) The color blue brings good luck.
D) People with glasses are more creative.

Show Answer

Explanation: The correct answer is B) Eating healthy food improves academic performance. A testable hypothesis is one that can be empirically investigated and potentially proven or disproven through scientific methods. In this case, the effect of eating healthy food on academic performance can be tested and measured.

---

Question 2:

Which of the following is an example of a non-testable hypothesis?

A) The weather affects mood.
B) Exercising regularly improves physical fitness.
C) People prefer watching movies over reading books.
D) Owning a dog reduces stress levels.

Show Answer

Explanation: The correct answer is A) The weather affects mood. A non-testable hypothesis is one that cannot be effectively tested or measured using scientific methods. While there may be a correlation between weather and mood, it is challenging to establish a direct cause-and-effect relationship through controlled experiments.

---

Question 3:

Which of the following is a specific hypothesis?

A) Exercise is good for health.
B) People prefer sweet food over spicy food.
C) Increasing temperature leads to increased plant growth.
D) Traveling enhances creativity.

Show Answer

Explanation: The correct answer is C) Increasing temperature leads to increased plant growth. A specific hypothesis is one that clearly states the relationship between two variables and can be tested. In this case, the hypothesis states that an increase in temperature will lead to an increase in plant growth, which can be investigated and analyzed through controlled experiments.

---

Question 4:

Which of the following is a null hypothesis?

A) There is a link between caffeine consumption and sleep quality.
B) Eating chocolate causes weight loss.
C) People who exercise regularly have lower stress levels.
D) Listening to music improves memory retention.

Show Answer

Explanation: The correct answer is A) There is a link between caffeine consumption and sleep quality. A null hypothesis is a statement that suggests there is no significant relationship or effect between two variables. In this case, the null hypothesis would state that there is no link between caffeine consumption and sleep quality, and any observed relationship is due to chance or other factors.

---

Question 5:

Which of the following is a directional hypothesis?

A) Drinking water increases hydration.
B) Exposure to sunlight affects vitamin D levels.
C) Studying improves academic performance.
D) Playing video games leads to increased aggression.

Show Answer

Explanation: The correct answer is D) Playing video games leads to increased aggression. A directional hypothesis makes a specific prediction about the direction of the relationship between variables. In this case, the hypothesis states that playing video games leads to increased aggression, implying a cause-and-effect relationship in a specific direction.