Science Light and Eye 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

1. Draw a normal and complete the direction of the beam of light? answer

Upside down AND back to front 2. How would the tree’s image appear on the back of your eyeball (retina)? answer Upside down AND back to front

Label the parts of the eye. answer A B A Cornea B Retina C Optic Nerve D Lens C D

Label A and B answer _____A___ A Pupil B Iris ______B__

5. Name the two types of lens. answer Concave lens Convex lens

6. Two common eye defects are.. answer Short sighted and long sighted

7. Is this person long sighted or short sighted? answer S Casey Int1 Biology

8. Is this person long sighted or short sighted? answer

9. What type of lens can correct long sight? answer Focuses behind the retina A convex lens bends the rays of light so that they focus on the retina

What type of lens can correct short sight? answer Light focuses in front of the retina A concave lens bends the rays of light so that they focus on the retina

11. What is the proper name for a rainbow? answer Visible spectrum

12. Which colour is refracted (bent) the most going through a prism? answer Violet

13. What section of the electromagnetic spectrum is used to detect broken bones? answer X Rays

14. What detector is required to pick up radio and TV waves? answer An aeriel.

What section of the electromagnetic spectrum do we detect as heat radiation? answer Infra-red.

16. What colour do you get if you mix red light and green light ? answer Yellow

17. What are the 3 primary colours of light? answer Red , Green and Blue

What is beyond violet on the electromagnetic spectrum answer Ultraviolet

List the visible spectrum Red Orange Yellow Green Blue Indigo Violet answer

20. What does a convex lens do to beams of light? answer Makes them converge (meet at a point)

21. Name point X? answer X Focal point

22. What happens to the focal point if a thicker lens is used? answer Focal point The focal point is closer to the lens

23. What does a convex lens do to beams of light? answer Makes them diverge (go further apart)