4Q MQT Review

Which of the following happens to water density when water temperature increases?

• density increases

• density decreases

• density remains the same

• density increases and decreases randomly

Answer explanation

When water temperature increases, water density decreases. This is due to the fact that warmer water molecules are more spread out, leading to a decrease in density.

Ground water contamination is greatly influenced by _____?

• human activities

• over construction of deep well

• industrialization

• all of the above

Answer explanation

Ground water contamination is greatly influenced by human activities, over construction of deep well, and industrialization, hence the correct answer is 'all of the above'.

Warming of the stratosphere is caused by ____ .

• Ultraviolet Rays

• meteorites

• condensation

• greenhouse gases

Answer explanation

Warming of the stratosphere is caused by Ultraviolet Rays.

How does the effect of greenhouse intensify climate change?

• changes in migration patterns

• extreme weather conditions

• acidic ocean

• traps heat and raise global temperatures

Answer explanation

Greenhouse effect traps heat in the atmosphere, leading to a rise in global temperatures, which intensifies climate change.

Which is the effect of our glaciers and ice caps melting?

• oceans and seas turns acidic

• no effect on marine life

• cooler temperatures

• abnormal rise in ocean and sea levels

Answer explanation

Melting glaciers and ice caps lead to an abnormal rise in ocean and sea levels, impacting coastal areas and ecosystems.

Which of the following will likely happen if there is no atmosphere?

• increase in photosynthetic activities

• presence of oxygen

• absence of weather

• abundance of life forms

Answer explanation

The absence of atmosphere would lead to the absence of weather, as weather phenomena are driven by interactions between the atmosphere and the Earth's surface.

Hottest layer of the atmosphere?

• thermosphere

• exosphere

• mesosphere

• stratosphere

Answer explanation

The thermosphere is the hottest layer of the atmosphere, reaching temperatures of up to 2,500 degrees Celsius due to the absorption of high-energy solar radiation.

Refers to the position of an object or place with respect to the position of another object or place?

• relative location

• absolute location

• internal location

• external location

Answer explanation

The correct choice is relative location, which refers to the position of an object or place in relation to another object or place.

Evaporation of water through the leaves or body parts of plants ?

• transpiration

• evaporation

• condensation

• precipitation

Answer explanation

Transpiration is the process of water evaporation through the leaves or body parts of plants, not just simple evaporation. It is a crucial mechanism for plants to regulate temperature and transport nutrients.

Which of the following can you do to help decrease global warming?

• 
  Eat more ice cream.

• Keep your freezer door open.

• Keep your air conditioner on high.

• reduce, reuse, and recycle

Answer explanation

To help decrease global warming, the correct choice is to reduce, reuse, and recycle. This helps in conserving resources and reducing waste that contributes to environmental issues like global warming.