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)
 Hardness
Cleavage
Colour
Streak
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