Topic 9 Earth Science

Which of the following statements explains the energy budget on Earth?

• Most energy is made into food by plants.

• Earth's surface absorbs and re-emits equal amounts of energy.

• Earth's surface reflects more energy than the atmosphere.

• The atmosphere absorbs more energy than Earth's surface.

What type of heat transfer takes place from the sun to Earth?

• convection

• conduction

• expansion

• radiation

Which of these explains what happens when the ozone layer is damaged?

• Fewer UV rays reach the Earth's surface.

• Fewer UV rays are absorbed by the atmosphere.

• More UV rays are reflected back toward space.

• Other parts of the atmosphere make up for the damaged ozone layer.

The greenhouse effect supports life on Earth. It is caused when energy from the sun is

• absorbed by oceans

• trapped by the atmosphere

• reflected by the atmosphere

• reflected from Earth

If the concentration of carbon dioxide gas continues to increase, it will cause

• temperatures to increase.

• temperatures to decrease.

• sea levels to decrease.

• increased glaciers.

You are creating a poster to warn people about the importance of protecting themselves from UV radiation. What is one thing you should NOT include?

• wear protective clothing

• wear sandals

• use sunscreen

• wear sunglasses

What causes wind?

• uneven heating of Earth's surface

• warm air sinking while cold air rises

• air movement from low to high pressure

• air movement

Which instrument measures wind speed?

• wind vane

• rain gauge

• anemometer

• speedometer

Which of these conditions describes the Antarctic Bottom Water?

• cold and salty

• cold and fresh

• warm and salty

• warm and fresh

What causes the pattern of ocean currents to change during La Nina and El Nino events?

• salinity

• wind

• density

• temperature