Waves test questions

Target Language or Knowledge:

Fill the blanks below:
What is light? _Form_of_energy_that_ travels as _electromagnetic_waves._ 2 How do waves transfer energy? _By_vibrations_ _without_matter_being_transferred._ 3 Light waves are a type of electromagnetic wave. What are electromagnetic waves? _ Rapidly_changing_(oscillating)_magnetic_and_electrical_ fields (ripples). 4 What are four other types of electromagnetic waves? _ radio_waves/microwaves_infra-red_ _waves_ultra-violet_waves_X_rays_ 5 Light energy from the sun can be detected by our eyes. What other form of electromagnetic energy from the sun can be detected by our skin? _ infra_red_heat_waves_ 6 The sun also radiates another form of electromagnetic energy that can cause sunburn and skin cancers. What is the name of this wave type? _ultra_violet_waves_
Reflecting Surfaces and Images
When light rays hit the surface of an object or substance, what are the three possible fates of those light rays? They may be _reflected_absorbed-or_transmitted._ 2 What is the name given to a light ray when it is travelling from a light source to a mirror surface? _the_incident_ray_ 3 What is the name given to the light ray when it has bounced off the surface of a mirror? _the_reflected_ray_ 4 What types of reflecting surfaces are able to form sharp images? _Only_those_with_smooth_shiny_surfaces._
Objects and Images Match the pairs below:
What is an image → a view of an object other than where it actually is. Picture formed when light from an object is made to focus, Images are either real or virtual. How can you test whether an image is real or virtual? → Firstly identify where the image appears to be (e.g. behind the mirror), then place a screen there to see if an image can be focused on the screen. If it can be then the image is real; if it can’t be then the image is vi, Are the images seen in a plane mirror real or virtual? → virtual, Would the image inside a camera be real or virtual? → real
Laws of Reflection
What name is given to an imaginary line drawn at right angles to the surface of a mirror at the point where an incident strikes the mirror? _the_normal_ 2 Complete the following definitions: a) The angle of incidence is _the_angle_formed_by_the_incident_ray_and_the_normal._ b) The angle of reflection is _the_angle_formed_by_the_reflected_ray_and_the_normal._
Bending Light Rays Fill the blanks below:
What aspect of a light wave does the medium affect? _Its_speed_ What is meant by the term 'refraction'? Itrefers to the _change_of_direction_and_ _speed_of_light_waves_as_they_enter_a_new_media._ 4 What happens to a light ray when it entered the glass block? _ Bent_towards_normal._ Why did it do this? Because it entered an optically _denser_ medium. What happens to the light ray when it leaves the glass block? _ Bend_away_from_normal._