Grade 7 Review. QUESTION What do scientists believe is the driving force of our moving plates?
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Transcript of Grade 7 Review. QUESTION What do scientists believe is the driving force of our moving plates?
Grade 7 Review
QUESTION
What do scientists believe is the driving force of our moving
plates?
ANSWER
Convection Currents in the magma
QUESTION
What SI (metric) unit is used to measure temperature?
QUESTION
What SI (metric) unit is used to measure temperature?
ANSWER
oC
QUESTION
What process do plants use to make food from light?
ANSWER
photosynthesis
QUESTION
How is heat transferred through solids such as metals?
ANSWER
Conduction
QUESTION
A student heats equal amounts of sand and water in identical beakers on a hot plate set at 250oC? He measures the temperature of both substances every minute for 45 minutes.What is a possible hypothesis?
ANSWER
I believe the water will heat up faster than the sand.
QUESTION
A student heats equal amounts of sand and water in identical beakers on a hot plate set at 250oC? He measures the temperature of both substances every minute for 45 minutes.What is the independent variable?
ANSWER
The materials – water or sand
OR
The time
QUESTION
A student heats equal amounts of sand and water in identical beakers on a hot plate set at 250oC? He measures the temperature of both substances every minute for 45 minutes.What is the dependent variable?
ANSWER
The temperature of the materials
QUESTION
A student heats equal amounts of sand and water in identical beakers on a hot plate set at 250oC? He measures the temperature of both substances every minute for 45 minutes.What are three controlled variables?
ANSWER
The temperature hotplate
The amount of material
The size of beaker
The recording times
QUESTION
What SI (metric) unit is used to measure weight?
ANSWER
Newtons
QUESTION
What are three properties used to identify minerals?
ANSWER
Lustre (shine) Colour
Hardness Streak
Cleavage Rock type
QUESTION
What force is indicated in the diagram?
ANSWER
Compression
QUESTION
What force is indicated in the diagram?
ANSWER
Compression
QUESTION
What is this symbol?
ANSWER
Poisonous or toxic material causing SERIOUS or IMMEDIATE effects.
QUESTION
A mixture has ______ or more types of particles?
ANSWER
2
QUESTION
Consider:
Sun grass mouse snake
What is this called?
ANSWER
A food chain
QUESTION
Consider:
Sun grass mouse snake
What is the producer?
ANSWER
Grass
QUESTION
Consider:
Sun grass mouse owl snake
What is the top consumer?
ANSWER
snake
QUESTION
A solution with lots of solute (a very dark glass of iced tea)
is called _______.
ANSWER
Concentrated
QUESTION
What term is used to describe the study of the
earth?
ANSWER
Geology
QUESTION
A solution with lots of solute (a very dark glass of iced tea)
is called _______.
ANSWER
Concentrated
QUESTION
The pyramids or a mountain is considered to be this type of
structure.
ANSWER
mass
QUESTION
Soil is made of these main parts.
ANSWER
Weathered rock (mineral fragments)
Water
Organic Material (Humus)
Air
QUESTION
The three phases or states of matter are...
ANSWER
SOLIDS
LIQUIDS
GASES
QUESTION
Calculate the structural efficiency of the following
building.
MASS of BUILDING = 10 000 kg
MAXIMUM LOAD = 500 000 kg
ANSWER
SE = max load / dead load
= 500 000 kg = 50
10 000 kg
QUESTION
What is the method of heat transfer associated with
fluids?
ANSWER
convection
QUESTION
What is the method of heat transfer associated with
fluids?
ANSWER
convection
QUESTION
What term is used to describe the study of energy &
forces?
ANSWER
Physics
QUESTION
What type of structure is used most often for sports
complexes?
ANSWER
Shell structures
QUESTION
What process do we as animals make energy?
ANSWER
(Cellular) Respiration
QUESTION
How many km in 6500 m?
ANSWER
6.5 km
QUESTION
Consider a glass of orange juice. What process may be
used to separate the pulp from the juice ?
ANSWER
Filtration
QUESTION
What is this symbol?
ANSWER
Oxidizing material
QUESTION
Consider a glass of orange juice. What process may be
used to separate the pulp from the juice ?
ANSWER
Filtration
QUESTION
What are some specific ways trees (and other plants) are
important for us or other animals?
ANSWER
Lumber for building
Shade
Oxygen
Food source for animals (and us)
Habitats for animals
QUESTION
What are these?
ANSWER
Erlenmeyer flasks