Physics G
What is Reflection?
Bouncing back of light.
How is energy flowed through a ecosystem?
Energy is transferred between organisms in food webs from producers to consumers
Name 3 properties of metals
ductile, shiny , strong, hard , magnetic some only, density, good conductors of heat and electricity etc
What is Refraction
Bending of light.
What is a trophic level
the position of an organism in a food chain or web.
equation of oxidation
metal + oxygen arrow metal oxide
First rule of refraction?
Any ray of light traveling parallel to the principal axis will refract and travel toward's the focal point.
What is the Main source of a food chain or the food web?
Sun or Sunlight.
what happens when metal reacts with acids?
state the word equation too
When an acid reacts with a metal, the products are a salt and hydrogen. This is the general word equation for the reaction: metal + acid → salt + hydrogen.
where will be the image formed if the object is placed between the optical center and the center of curvature?
Virtual or real?
The image will be formed at the same place where the object is. It will be formed behind.
Virtual.
Define respiration in the carbon cycle?
Releasing carbon dioxide into the atmosphere.
is rusting only a special name for iron?
Yes/No
state reason
No. Rusting is a type of rusting and it is a special name given to iron and steel.
3 rules of refraction
1. Ray of light traveling parallel to the principle axis will refract and travel towards the focal point.
2. Any ray of light traveling through the optical center will not refract but it will go in the same direction as it came from.
3. any ray of light traveling through the center of curvature will refract and travel parallel to the principal axis.
equation of Photosynthesis?
chlorophyll
water + oxygen arrow glucose + oxygen.
sunlight
Name a sacrificial protection
Answer may Vary