GRADE 5 — BASIC SCIENCE AND TECHNOLOGY... 2ND CA

The method by which waste is discarded is termed ____________.

• Recycling

• Reducing waste

• Waste disposal

• Discarding waste

On which kind of day would you expect the most evaporation from the surface of a pond?

• Cold, Rainy

• Cold, Sunny

• Warm, Rainy

• Warm, Sunny

Pumice, shale, and limestone are examples of _______ rock.

• Igneous

• Metamorphic

• Sedimentary

• Stones

The transfer of heat by means of the movement of a substance is known as ______.

• Conduction

• Convection

• Radiation

The measure of how hot or cold something is called ______

• Density

• Temperature

• Volume

• Solid

The first law of thermodynamics states that: ______

• The entropy of a system approaches a constant value as the temperature approaches absolute zero

• The entropy of a closed system always increases

• Energy can be created or destroyed in an isolated system.

• Energy cannot be created or destroyed in an isolated system

When humans move into an environment, what is a major impact of their presence?

• Habitat destruction

• Changes in the climate

• More homes for animals

• More room for plants to grow

____ is the process whereby trees are destroyed without planting them again.

• Afforestation

• Deforestation

• Forest

• Plantation

Define Global warming ______

• Global warming is the rise in pressure of boiling water caused by excessive heat from the environment

• Global warming is a gradual increase in the overall temperature of the earth's atmosphere due to the greenhouse effect caused by increased levels of carbon dioxide, CFCs, and other pollutants

• Global warming is a global attack on the ecosystem

• Global warming is an attack on global movement of humans on earth

Which of these is not an effect of deforestation?

• Soil erosion

• Dead soil organisms

• Dry soil

• Damp soil