Summary
Summary Ekonomiese en Bestuurswetenskappe - Kwartaal 1 -Studie Notas
- Course
- Natural Science
- Institution
- 8th Grade
Ekonomiese en Bestuurswetenskappe - Kwartaal 1 -Studie Notas Meervoudige Keuse Vrae Die ekonomie Belasting Armoede
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1NATURAL SCIENCES
GRADE 8
TASK 2: TERM 1
TEST
TIME: 1½ hours
TOTAL: 60
Short questions
Carbon dioxide When carbon dioxide is bubbled through clear lime water, the clear
lime water will become milky
Population A group of individuals of the same species found in a community
Hypothesis A statement encompassing the variables of an experiment, which can
be true or false
Trophic level The position an organism occupies in a food chain
Tuberculosis A disease that can be treated by taking antibiotics.
Cell Division & The life processes for which the energy that released during
Reproduction respiration, is used.
Deciduous A plant that loses its leaves in the winter or dry season, the opposite of
evergreens.
Evergreen plants Evergreen plants stay green all year.
Chlorophyll The pigment in green plants that absorbs sunlight
Mimicry The phenomenon where an animal's appearance makes it look like
another animal or object
Photosynthesis
Photosynthesis is the process by which plants use sunlight, water, and
carbon dioxide to create oxygen and energy in the form of sugar.
Needed: Light energy, O2, CO2 and H2O
Respiration / Aerobic
respiration
Aerobic Respiration: It is the process of cellular respiration that takes
place in the presence of oxygen gas to produce energy from food.
@Juffrou_Ansie
, 2
This type of respiration is common in most of the plants and animals,
birds, humans, and other mammals. In this process, water and carbon
dioxide are produced as end products
Anaerobic respiration
Anaerobic respiration occurs without oxygen and releases less energy
but more quickly than aerobic respiration. Anaerobic respiration in
microorganisms is called fermentation.
Test for starch Iodine solution turns blue-black.
A xerophyte A xerophyte is a plant adapted to dry areas such as deserts and semi-
deserts through sunken stomata.
Saprophytes Plants that survive on dead organic tissue.
Hydrophytes Palms, water lilies and hyacinths are examples of this type of plant.
Jonas Salk The scientist who discovered the polio vaccine.
Louis Pasteur The scientist who discovered the rabies vaccine.
Anthony van Antonie van Leeuwenhoek designed and built his own microscopes. In
Leeuwenhoek 1674 he became the first person to see and describe microscopic
organisms.
@Juffrou_Ansie
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