1. Which cartilage type allows for smooth movement at joints and absorbs shock?

A. Hyaline cartilage
B. Fibrocartilage
C. Elastic cartilage
D. None of the above

Correct answer: A

Rationale: The correct answer is A: Hyaline cartilage. Hyaline cartilage is the most abundant type of cartilage in the body and is found in the joints, providing a smooth surface for movement. It also acts as a shock absorber, cushioning the joints during activities. Fibrocartilage is found in intervertebral discs and provides strength and support, but it is not as effective at absorbing shock as hyaline cartilage. Elastic cartilage is found in the external ear and epiglottis, providing flexibility and maintaining shape, but it does not have the same shock-absorbing properties as hyaline cartilage. Therefore, hyaline cartilage is the best choice for a cartilage type that allows for smooth movement at joints and absorbs shock.

2. Which of the following describes a vector quantity?

A. Speed
B. Distance
C. Mass
D. Velocity

Correct answer: d

Rationale: Velocity is a vector quantity as it includes both magnitude (speed) and direction.

3. What term describes the bending of waves around obstacles or through openings?

A. Reflection
B. Refraction
C. Diffraction
D. Absorption

Correct answer: c

Rationale: Diffraction occurs when waves bend around obstacles or spread after passing through small openings.

4. What is the process by which a large, unstable nucleus splits into two smaller nuclei, releasing neutrons and energy?

A. Alpha decay
B. Beta decay
C. Gamma decay
D. Nuclear fission

Correct answer: D

Rationale: Nuclear fission involves splitting a heavy nucleus into smaller fragments, releasing neutrons and energy.

5. Which of the following is an example of a weak acid?

A. Hydrochloric acid (HCl)
B. Sulfuric acid (H2SO4)
C. Acetic acid (CH3COOH)
D. Nitric acid (HNO3)

Correct answer: C

Rationale: Weak acids only partially dissociate in water, releasing a lower concentration of hydrogen ions.

6. A news article claims a scientist has discovered a cure for cancer. How should you approach this information?

A. Celebrate the breakthrough and immediately share the news with everyone.
B. Remain skeptical and wait for independent verification and further research.
C. Dismiss the claim as impossible without any further investigation.
D. Accept the information as fact because it was published in a news article.

Correct answer: B

Rationale: Extraordinary claims require extraordinary evidence. It's essential to wait for scientific consensus and verification before accepting such groundbreaking claims.