Science Library - free educational site

Science Library Quiz

EMR

Instructions: answer the questions, check them carefully, and when you are sure they are all right, press submit. The number of correct answers will be displayed.

Question 1: How can a pinhole camera produce an image if it doesn't have a lens?




Question 2: A student wishes to photograph his 160cm-tall friend with a pinhole camera. He has a box 20cm across. How far away should the friend stand to produce a 15cm image?




Question 3: When is a pinhole camera image larger than the object being photogaphed?




Question 4: How could artists in the Middle Ages use pinhole cameras if they did not have photographic paper or film?




Question 5: What was the advantage to early life to have light sensitive organs?




Question 6: Why do humans and most animals have only two eyes, while spiders and other insects have many?




Question 7: If the pinhole camera image is real and inverted, and in focus, where is the focal point?





Question 8: What is meant by an 'evolutionary arms race'?




Question 9: What is the purpose of fluid in the eyeball?




Question 10: Why does the image in a pinhole camera come out negative?





Question 11: Which band of the EMR spectrum is used for remote control devices, such as for home media equipment?







Question 12: Which band of the EMR spectrum is used for examining broken bones in a hospital?







Question 13: Which band of the EMR spectrum is used to examine structures of crystals and other materials?







Question 14: Which band of the EMR spectrum is emitted by warm objects?







Question 15: Which band of the EMR spectrum is used to kill harmful bacteria in food so it stays fresher for longer?







Question 16: Which band of the EMR spectrum causes water molecules to vibrate very quickly causing heat, and your dinner is cooked in minutes?







Question 17: Which band of the EMR spectrum will give you a tan if you sit out in the Sun?







Question 18: Which band of the EMR spectrum is used the most in optical fibre communication?







Question 19: Which band of the EMR spectrum is used to read barcodes on products at supermarket cashiers?







Question 20: in addition to heat and ultraviolet, which band of the EMR spectrum can be used to sterilise medical equipment by killing bacteria?







Question 21: Which band of the EMR spectrum is used by police for night vision?







Question 22: In addition to high-frequency radio, which band of the EMR spectrum is used for satellite communication?







Quizzes available from the Waves and Oscillations topic

Select a topic for more Physics quizzes:

Select a subject for more ScienceLibrary.info quizzes

Latest Item on Science Library

The most recent article is:

Trigonometry

View this item in the topic:

Vectors and Trigonometry

and many more articles in the subject:

Subject of the Week

Environment

Environmental Science is the most important of all sciences. As the world enters a phase of climate change, unprecedented biodiversity loss, pollution and human population growth, the management of our environment is vital for our futures. Learn about Environmental Science on ScienceLibrary.info.

Environmental Science

Test your knowledge!

Question: What improvement did Isaac Newton make to the design of the telescope?




Go to the article about: Lenses

Lugano English

Quote of the day...

The Facebook filter bubble is not a technical but an anthropological problem.

ZumGuy Internet Promotions

Renewable energy media services