Light And Shadows

Explanation
Shadows are indeed made with opaque material. This is because opaque materials do not allow light to pass through them, causing them to block the light and create a shadow on the opposite side. Transparent or translucent materials, on the other hand, allow some or all of the light to pass through them, resulting in less defined or no shadow formation. Therefore, the correct answer is "Yes."

Explanation
Shadows are actually longer in the morning because the sun is low on the horizon. As the day progresses and the sun rises higher in the sky, shadows become shorter. Therefore, the correct answer is "No".

Explanation
Shadows are shorter at midday or lunchtime because the sun is directly overhead during these times. When the sun is directly overhead, the angle at which the sunlight hits objects is more vertical, resulting in shorter shadows. As the sun moves lower in the sky during the morning and afternoon, the angle of the sunlight becomes more slanted, causing shadows to appear longer. Therefore, it is correct to say that shadows are short at midday or lunchtime.

Explanation
Shadows are formed when an object obstructs the path of light, preventing it from reaching a certain area. This is why when an object is placed in front of a source of light, it casts a shadow on the surface behind it. The presence of a shadow indicates that light is being blocked by an object, confirming that the given statement is correct.

Explanation
Shadows are not made with transparent material. Shadows are formed when an object blocks light, preventing it from reaching a certain area. Transparent materials allow light to pass through them, so they do not create shadows.

Explanation
The correct answer is "all of the above" because the question is asking for sources of light, and all three options listed (the sun, candle, and flashlight) are sources of light. The sun is a natural source of light, while a candle and flashlight are man-made sources of light. Therefore, all of these options are valid sources of light.