1
Ancient organisms that eventually formed fossil fuels lived:
A. 100 years ago
B. Thousands of years ago
C. Hundreds of millions of years ago
D. In the time of early humans
Answer: C. Hundreds of millions of years ago
Peat formed mainly in which types of environments?
A. Deserts
B. Swamps, lakes, and oceans
C. Grasslands
D. Polar regions
Answer: B Swamps, lakes, and oceans
When fossil fuels are burned, the chemical energy is usually transformed into:
A. Electrical energy
B. Water energy
C. Solar energy
D. Sound energy
Answer: A Electrical energy
Drilling is used to extract which fossil fuel(s)?
A. Only coal
B. Only natural gas
C. Oil and natural gas
D. Only peat
Answer: C Oil and natural gas
Which fossil fuel is also known as petroleum?
A. Coal
B. Oil
C. Natural gas
D. Peat
Answer: B Oil
What is the original material that eventually becomes fossil fuel?
A. Pure minerals
B. Peat
C. Ice
D. Sandstone
Answer: B Peat
Why are fossil fuels called “fossil” fuels?
A. They are found in fossils
B. They form from decomposed remains of dead organisms
C. They are made in factories
D. They are found only in deserts
Answer: B They form from decomposed remains of dead organisms
Which precipitation forms when rain freezes on contact with cold surfaces?
A. Snow
B. Sleet
C. Freezing rain
D. Hail
Answer: C Freezing rain
What percentage of the atmosphere is oxygen?
A. 78%
B. 50%
C. 21%
D. 1%
Answer: C 21%
Which is described as light rain with very small droplets?
A. Graupel
B. Snow
C. Hail
D. Drizzle
Answer: D Drizzle
Which statement about fossil fuels is TRUE?
A. They are renewable
B. They form quickly
C. They can be solid, liquid, or gas
D. They are mostly made of metals
Answer: C They can be solid, liquid, or gas
What causes wind?
A. Even heating of Earth
B. Differences in thermal energy and air pressure
C. Constant temperature
D. Movement of oceans
Answer: B Differences in thermal energy and air pressure
Which layer contains the ozone layer?
A. Mesosphere
B. Exosphere
C. Stratosphere
D. Thermosphere
Answer: C Stratosphere
In which layer does weather occur?
A. Stratosphere
B. Mesosphere
C. Thermosphere
D. Troposphere
Answer: D Troposphere
What happens to air pressure as altitude increases?
A. It increases steadily
B. It decreases steadily
C. It stays the same
D. It rises, then falls
Answer: B It decreases steadily
Snow forms when:
A. Rain freezes after hitting the ground
B. Clouds and air below are both below freezing
C. Temperatures are above freezing
D. Raindrops evaporate
Answer: B Clouds and air below are both below freezing
Warm air rises because it is:
A. More dense
B. Less dense
C. Heavier
D. Colder
Answer: B Less dense
Breathing becomes difficult at high altitudes because:
A. There is more oxygen
B. Air pressure is very low
C. The temperature is higher
D. Winds blow downward
Answer: B
Answer: B. Air pressure is very low
What do plants use from the Sun to make food?
A. UV light
B. Visible light
C. Infrared radiation
D. X-rays
Answer: B Visible light
Why is air pressure greatest at Earth’s surface?
A. Sunlight heats the air
B. There is more dust
C. All the air above presses down
D. Gravity is weaker
Answer: C All the air above presses down
What does a barometer measure?
A. Temperature
B. Wind direction
C. Air pressure
D. Humidity
Answer: C Air pressure
Which is the outermost layer of the atmosphere?
A. Troposphere
B. Exosphere
C. Thermosphere
D. Mesosphere
Answer: B Exosphere
Where is temperature warmest near Earth?
A. At 10 km
B. At 20 km
C. At the ground
D. In the mesosphere
Answer: C At the ground
Which type of sunlight cannot be seen or felt, but still affects humans?
A. Visible light
B. Infrared
C. UV light
D. Microwaves
Answer: C UV light
What is the atmosphere?
A. The solid layer of Earth
B. The envelope of gases surrounding Earth
C. Earth’s magnetic field
D. A layer of clouds
Answer: B The envelope of gases surrounding Earth