Year 8/7th Grade Exam Quiz :) Science

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| By Libertymae

Libertymae

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1/5 Questions

Heart Disease is caused by lack of Vitamin C?
- True
- False

About This Quiz

This Year 8\/7th Grade Science quiz assesses knowledge on fundamental scientific concepts including respiration, properties of light, and basic elements. It tests understanding through true\/false and matching questions, enhancing students' comprehension of key science topics.

Year 8/7th Grade Exam Quiz :) Science - Quiz

2.

True or False? Light travels in straight lines??
- True
- False
Correct Answer

A. True

Explanation

Light travels in straight lines because it is a form of electromagnetic radiation that propagates through space as waves. These waves move in a straight line until they encounter an obstacle or are refracted or reflected by a medium. This behavior is explained by the principle of rectilinear propagation of light, which states that light travels in straight lines unless it interacts with another object or medium.

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3.

What is the word equation for respiration?
- Water+Carbon Dioxide= Nitrogen+Oxygen
- Glucose+Oxygen=Carbon Dioxide+Water
- Glucose+Oxygen=Carbon Dioxide+Nitrogen
Correct Answer

A. Glucose+Oxygen=Carbon Dioxide+Water

Explanation

The word equation for respiration is glucose + oxygen = carbon dioxide + water. During respiration, glucose is broken down in the presence of oxygen to produce carbon dioxide and water. This process releases energy that is used by cells for various functions.

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4
4.

What is the effect called when light hits a window and changes direction?
- Reflection
- Spectrum
- Refraction
- Mirror Line
Correct Answer

A. Refraction

Explanation

Refraction is the correct answer because when light passes through a window, it changes direction due to the change in speed caused by the change in medium. This phenomenon is known as refraction.

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2

Year 8/7th Grade Exam Quiz :) Science

Heart Disease is caused by lack of Vitamin C?

Quiz Preview

True or False? Light travels in straight lines??

What is the word equation for respiration?

What is the effect called when light hits a window and changes direction?