7th grade science

Question 1

Decomposition

Answer 1

Decomposition is the process by which dead organic substances are broken down into simpler organic or inorganic matter such as carbon dioxide, water, simple sugars and mineral salts.

Question 2

Energy Pyramid

Answer 2

An ecological pyramid is a graphical representation designed to show the biomass or bioproductivity at each trophic level in a given ecosystem.

Question 3

Photosynthesis

Answer 3

Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism’s metabolic activities.

Question 4

Trophic level

Answer 4

The trophic level of an organism is the position it occupies in a food web.

Question 5

Chemical Energy

Answer 5

Chemical energy is the potential of a chemical substance to undergo a chemical reaction to transform into other substances.

Question 6

Comsumer

Answer 6

A consumer is a person or a group who intends to order, orders, or uses purchased goods, products, or services primarily for personal, social, family, household and similar needs, not directly related to entrepreneurial or business activities.

Question 7

Deconsumer

Answer 7

Decomposers are organisms that break down dead or decaying organisms, they carry out decomposition, a process possible by only certain kingdoms, such as fungi.

Question 8

Food Chain

Answer 8

A food chain is a linear network of links in a food web starting from producer organisms and ending at apex predator species, detritivores, or decomposer species.

Question 9

Food web

Answer 9

A food web is the natural interconnection of food chains and a graphical representation of what-eats-what in an ecological community.

Question 10

Producer

Answer 10

Producers are any kind of green plant. Green plants make their food by taking sunlight and using the energy to make sugar.

Question 11

Radiant Energy

Answer 11

In physics, and in particular as measured by radiometry, radiant energy is the energy of electromagnetic and gravitational radiation.

Question 12

Autotroph

Answer 12

An autotroph or primary producer is an organism that produces complex organic compounds using carbon from simple substances such as carbon dioxide, generally using energy from light or inorganic chemical reactions.

Question 13

Hetertroph

Answer 13

A heterotroph is an organism that cannot produce its own food, instead taking nutrition from other sources of organic carbon, mainly plant or animal matter.

Question 14

Thermal energy

Answer 14

Thermal energy refers to several distinct physical concepts, such as the internal energy of a system.

Question 15

Mechanical Energy

Answer 15

mechanical energy is the sum of potential energy and kinetic energy.