1. Wilhelm Roentgen first found X-rays.

2. When the wavelenghts shortens, the frequencies and the energies become higher. When the waves posesses more energies, it can be used in many ways. For example, Gamma rays, which is the rays that has the shortest wavelenghts on the diagram in the book, can be used to treat illnesses and create images.

3. They use a method called photosynthesis. And the use water, sunlight, and carbon dioxide to use this method

1. Wilhelm Roentgen, a German physicist, was the first discoverer of X-rays. While conducting an experiment at Wurzburg University, 1895, he noticed some photographic plates near his equipment glowing. He discovered that mysterious rays were being emitted by the glass tube, which contained electrodes. As electricity passed between the electrodes, X‑rays were emitted and appeared on the photographic plates. In the end, he was awarded the first Nobel Prize in Physics in 1901. (He named 'X' for unknown.)

2. Waves with short wavelengths, such as X-rays or gamma rays, have high frequencies and energies. These rays can be greatly beneficial in medical fields if carefully controlled. For example, X-rays can be used for diagnosing bone fractures and finding dense tumors, and gamma rays can be used to kill cancer cells and fight tumors.

3. There are three major ways plants use when making their own food, which are photosynthesis, the process of capturing light energy and converting it to sugar energy, respiration, burning sugars to yield energy, and transpiration, the loss of water vapor. Plants use water, sunlight, and carbon dioxide to do photosynthesis, which occurs in plant leaves. Chloroplasts, a part of leaves, are full of chlorophyll, which store water, sunlight, and carbon dioxide, and use them for making food later on.

1. The X-ray was found by scientist named Wilheim Roentgen while his experiments. He wanted to know what wll hapeen when the electric current passes through the gas. He founded the radiation and there fore recieved a Nobel prize for this.

2. It's frequency increases and wavelength decreases. When the wave has short wavelength then it will have high energy and frequency. For this X-rays and Gamma rays are used in many ways. They are both used for medical methods each in different part.

3. They make energy by Photosynthesis and use light, energy, water, carbon dioxide to make nutrient for itself.