Here are 10 one-word answer type questions from the topic Light Travels Along a Straight Line with their answers and explanations:
Topic: Light Travels Along a Straight Line
Light always travels in a straight line. This property is called the rectilinear propagation of light. It helps in the formation of shadows and explains why we cannot see around corners.
1. Question: What is the path along which light travels?
Answer: Straight
Explanation: Light travels in a straight line, which is called rectilinear propagation of light.
2. Question: What is formed when an opaque object blocks light?
Answer: Shadow
Explanation: A shadow is formed when light cannot pass through an opaque object.
3. Question: What kind of object does not allow light to pass through?
Answer: Opaque
Explanation: Opaque objects block light completely and form shadows.
4. Question: What do we call the straight-line movement of light?
Answer: Rectilinear
Explanation: The straight-line movement of light is known as rectilinear propagation of light.
5. Question: Which device helps to observe that light travels in a straight line?
Answer: Periscope
Explanation: A periscope uses mirrors and the straight-line movement of light to help us see objects.
6. Question: What kind of tube prevents light from bending?
Answer: Straight
Explanation: Light can pass through a straight tube, but not through a bent one.
7. Question: What is the beam of light from a lighthouse an example of?
Answer: Straight
Explanation: The light beam from a lighthouse shows that light travels in straight lines.
8. Question: What part of light is blocked by an object to form a shadow?
Answer: Rays
Explanation: Light rays are blocked by an object, leading to the formation of shadows.
9. Question: What is the shape of light’s path when viewed through a straight pipe?
Answer: Straight
Explanation: Light is visible through a straight pipe but not through a bent one, proving light travels straight.
10. Question: What is required to change the direction of light?
Answer: Mirror
Explanation: A mirror reflects light and changes its direction from its straight path.
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