Lightning bugs use their internal light source to attract other insects. They might eat the other bugs that come to visit them, or if they are from the same species, they may become mates.

These beautiful oriental fish lanterns are visible in the dark because there is a light source inside of them illuminating the darkness. Humans must have light to reflect off of an object's surface for our eyes to process the image.

The best object to bring into a cave would be the fire torch. This would illuminate or light up the area around you so that hidden objects (or dangers) would be visible. In the dark, without any light source, we would not know what is up ahead.

Light can come from natural and human-made sources. An example of a natural light source is the Sun; an example of a human-made light source would be a lightbulb. Either one can produce light.

Annie is asking a valid scientific question, and it can best be answered with an investigation. For an investigation to be reasonable, it has to be something Annie could perform and would answer the question. Annie's plan to place objects in front of the beam of light would help her to see how light can be blocked and what type of items would be best for blocking light.

An investigation can be completed for a scientific question where data can be collected from measuring or observing what takes place. "Why do you want to block light in your everyday life?" leads to personal opinion rather than data because it is asking "why you" want to do something. Each person's opinion may be different.

The list of supplies that would be most appropriate is a flashlight, notebook paper, blue construction paper, and black fabric. Each of those items can be placed in front of the flashlight to determine which blocks the most or least light and if it makes the room dark.

This scientific question is comparing a room with two different amounts of light. One room would need windows to be blocked from light getting in, and Maggie would look and record what she can see. Another room would have light flowing in through a window, and again Maggie would log what she sees. Maggie has to have an investigation that would allow her to compare the two different amounts of light in the room.

A dark sweater would be the best object to use in an investigation about blocking light because it is made of a material and is a color that absorbs or blocks light. A glass cup and plastic wrap are clear, so the light will pass through, whereas a dark sweater will prevent the light from passing.

The object that would be most appropriate for investigating light reflection would be a mirror. Mirrors reflect images and light, whereas paper and clothing absorb light. Using a mirror would allow someone to shine a light on the mirror and record how it reflects and study why.