Difficult - SISQB

What is the unit of measurement for work? (Write the word)

A force of 20 newtons is applied to move an object a distance of 5 meters. What is the work done? (Write the answer in numerical only).

What kind of blood vessels carry deoxygenated blood toward the heart?

• Pulmonary Artery

• Capillary

• Vein

• Superior Vena Cava

What causes day and night on Earth?

• Axis

• Revolution

• Rotation

Who discovered the electron?

(Write the full name.)

What do greenhouse gases do in our atmosphere?

• They absorb the radiation given off by the Earth

• They keep all the air within the Earth

• They block harmful radiation from reaching the Earth

CFCs (chlorofluorocarbons) are greenhouse gases that have caused a rise of 3 degree C in the global temperatures in the past century. Name the CFC that is used in refrigerators.

• Ammonia

• Carbon Dioxide

• Freon

• Methane

Where is the ozone layer located in the atmosphere?

What do you call the source of energy that comes from hot molten rocks?

• Fossil

• Hydroelectric

• Geothermal

• Tidal

It comes from Latin words meaning almost and shadow.

• Corona

• Penumbra

• Umbra