Final Exam-Science Term3

Which emits visible light?/381

• planet

• star

In which wavelength would you expect the hottest stars to emit most of their energy?/381

• gamma rays

• radio waves

Cell phones transmit and receive ______ waves./381

• infrared

• microwave

Electromagnetic waves do not require a medium to travel./381

• True

• False

What is the description for microwaves?/381

• used in cell phones

• has the least amount of energy

Which is true of the telescope above?/383

• The eyepiece and the objective lens are concave lenses

• Light is bent as it goes through the objecitive lens.

Which type of telescope is shown in the figure below?/383

• reflecting telescope

• refracting telescope

Reflecting telescopes use _______ to focus light./383

• Lenses

• Mirrors

Both reflecting and refracting telescopes are designed to.../383

• break visible light into colors of the spectrum.
• separate visible light from ultraviolet and radio waves.
• gather and focus visible light.
• work better with short-wavelength radiation.

A telescope that uses lenses and mirrors to collect and focus visible light is called an.../383

• Refracting Telescope
• Reflecting Telescope
• Optical Telescope
• Radio Telescope