Question

1. which statement about the electromagnetic radiation in space is true? select all that apply

humans can see all radiation from earth.
visible light is the only type of radiation that provides useful information.
astronomers use many types of telescopes to detect different kinds of radiation.
every star, including the sun, emits radiation of many different kinds.

Explanation:

• For "Humans can see all radiation from Earth": Humans can only see visible light (a part of electromagnetic radiation), not all types (e.g., radio waves, X - rays are invisible to the naked eye), so this is false.
• For "Visible light is the only type of radiation that provides useful information": Astronomers use non - visible radiation (like radio waves, infrared) for useful info (e.g., radio telescopes for celestial radio emissions), so this is false.
• For "Astronomers use many types of telescopes to detect different kinds of radiation": Astronomers use radio telescopes (for radio waves), X - ray telescopes (for X - rays), optical telescopes (for visible light), etc., to detect different electromagnetic radiations, so this is true.
• For "Every star, including the Sun, emits radiation of many different kinds": Stars emit a spectrum of electromagnetic radiation (visible, infrared, ultraviolet, etc.), so this is true.

Answer:

Astronomers use many types of telescopes to detect different kinds of radiation.
Every star, including the Sun, emits radiation of many different kinds.