GCSE PHYSICS - Revision Questions - Waves - Electromagnetic - Analogue - Digital - Plate Tectonics - Earthquakes

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Electromagnetic Waves Uses - Dangers - Transmission - Analogue - Digital
78	Are Electromagnetic Waves Longitudinal or Transverse?	Answer
79	What travels Faster than Electromagnetic Waves?	Answer
80	Can Electromagnetic Waves travel through a Vacuum?	Answer
81	Give the Electromagnetic Spectrum from Radio Waves to Gamma Rays.	Answer
82	As the Wavelength Decreases does the Frequency Increase or Decrease?	Answer
83	Give one Use of Radio Waves.	Answer
84	What are Ground Waves, Sky Waves and Space Waves?	Answer
85	What do Medium Wavelength Radio Waves Reflect from?	Answer
86	What type of Wave would be used to Transmit Information to Satellites?	Answer
87	How do Microwave Cookers work?	Answer
88	Give one Danger of Microwaves.	Answer
89	What is the Difference between Infra-red Waves and Infra-red Radiation?	Answer
90	Give one Use of Infra-red Waves.	Answer
91	Give one Danger of Infra-red Waves.	Answer
92	What is the Difference between Ultraviolet Waves and Ultraviolet Light?	Answer
93	What does Fluorescent mean?	Answer
94	Give one Use of Ultraviolet Light.	Answer
95	Give one Danger of Ultraviolet Light.	Answer
96	Give one Use of X-rays.	Answer
97	Give one Danger of X-rays.	Answer
98	How can People Protect themselves from the Dangers of X-rays?	Answer
99	Where do Gamma Rays come from?	Answer
100	Give one Danger of Gamma Rays.	Answer
101	What does Radiotherapy do?	Answer
102	What is Transmission?	Answer
103	Give two types of Electromagnetic Waves which are used for Transmission.	Answer
104	Describe an Analogue Signal.	Answer
105	What is a Carrier Wave?	Answer
106	Draw a Picture of a Digital Signal.	Answer
107	What is Decoding?	Answer
108	Give one Advantage that a Digital Signal has over an Analogue Signal.	Answer
109	What is the Quality of a Signal?	Answer
110	What is Noise?	Answer
111	What does an Analogue Signal do with Noise?	Answer
112	What does a Digital Signal do with Noise?	Answer

Earthquakes - Plate Tectonics
113	What produces Seismic Waves?	Answer
114	What are Earthquakes caused by?	Answer
115	What is the Outer Crust of the Earth made from?	Answer
116	What is the Mantle of the Earth made from?	Answer
117	Does the Mantle behave more like a Solid or a Liquid?	Answer
118	What is the Core of the Earth made from?	Answer
119	Is the Outer Core Liquid?	Answer
120	Is the Inner Core Liquid?	Answer
121	What causes P Waves and S Waves?	Answer
122	Are P Waves Longitudinal or Transverse Waves?	Answer
123	Are S Waves Longitudinal or Transverse Waves?	Answer
124	Do P Waves travel Faster than S Waves?	Answer
125	Can S Waves travel through the Mantle?	Answer
126	Can S Waves travel through the Outer Core?	Answer
127	Why do S Waves Curve?	Answer
128	Can P Waves travel through the Mantle?	Answer
129	Can P Waves travel through the Outer Core?	Answer
130	What are Plates?	Answer
131	What makes the Plates move?	Answer
132	What happens to Rocks during Tectonic Activity?	Answer
133	Give one Piece of Evidence that the Plates move.	Answer
134	Where do Plate Boundaries occur?	Answer
135	What happens when Plates Slide Past Each Other?	Answer
136	What are Plates Under the Ocean called?	Answer
137	What is Sea Floor Spreading?	Answer
138	What causes a Tsunami?	Answer
139	How can Rocks become Magnetic?	Answer
140	How can Magnetic Rocks provide Evidence for Sea Floor Spreading?	Answer
141	What is Subduction?	Answer
142	How do Fold Mountains occur?	Answer