# Grade 7 Review. QUESTION What do scientists believe is the driving force of our moving plates?

## Presentation on theme: "Grade 7 Review. QUESTION What do scientists believe is the driving force of our moving plates?"— Presentation transcript:

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?

QUESTION What process do plants use to make food from light?

QUESTION How is heat transferred through solids such as metals?

QUESTION A student heats equal amounts of sand and water in identical beakers on a hot plate set at 250 o C? 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 250 o C? 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 250 o C? 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 250 o C? 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?

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?

QUESTION What force is indicated in the diagram?

QUESTION What is this symbol?

ANSWER Poisonous or toxic material causing SERIOUS or IMMEDIATE effects.

QUESTION A mixture has ______ or more types of particles?

QUESTION Consider: Sun  grass  mouse  snake What is this called?

QUESTION Consider: Sun  grass  mouse  snake What is the producer?

QUESTION Consider: Sun  grass  mouse  owl  snake What is the top consumer?

QUESTION A solution with lots of solute (a very dark glass of iced tea) is called _______.

QUESTION What term is used to describe the study of the earth?

QUESTION A solution with lots of solute (a very dark glass of iced tea) is called _______.

QUESTION The pyramids or a mountain is considered to be this type of structure.

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...

QUESTION Calculate the structural efficiency of the following building. MASS of BUILDING = 10 000 kg MAXIMUM LOAD = 500 000 kg

QUESTION What is the method of heat transfer associated with fluids?

QUESTION What is the method of heat transfer associated with fluids?

QUESTION What term is used to describe the study of energy & forces?

QUESTION What type of structure is used most often for sports complexes?

QUESTION What process do we as animals make energy?

QUESTION How many km in 6500 m?

QUESTION Consider a glass of orange juice. What process may be used to separate the pulp from the juice ?

QUESTION What is this symbol?

QUESTION Consider a glass of orange juice. What process may be used to separate the pulp from the juice ?

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?