Consequences of Meteor Impacts and Climate Effects

A meteor impact leads to the release of dust and debris into the atmosphere. Which of the following is a likely consequence?

• A sudden warming of the Earth’s surface

• A long-term reduction in greenhouse gases

• A decrease in sunlight reaching Earth, causing cooling

• An increase in volcanic activity worldwide

Read the following scenarios: 1. A meteor strikes Earth, sending large clouds of dust into the atmosphere. 2. 12,000 square kilometers of forest are cut down to make space to raise cattle. 3. Massive volcanoes erupt, sending particles into the upper atmosphere. 4. The population grows, causing more transportation emissions to go into the atmosphere from cars, planes, and ships. Which of these scenarios would most likely have a cooling effect on the climate?

• 1 and 2

• 2 and 4

• 1 and 3

• 2 and 3

What role do ocean currents play in balancing the greenhouse effect?

• They absorb greenhouse gases directly from the atmosphere and reduce CO₂ levels permanently.

• They increase the temperature of the ocean, enhancing the greenhouse effect.

• They have no significant impact on the greenhouse effect.

• They distribute heat around the planet, affecting climate patterns.

How does carbon dioxide in the atmosphere contribute to the greenhouse effect?

• It reflects all of the Sun's energy back into space.

• It absorbs and re-radiates heat, warming the Earth's surface.

• It has a cooling effect on the Earth's atmosphere.

• It blocks all of the Sun's energy from reaching Earth.

Which position shows the position of Earth when it is summer in Argentina?

• 2- The southern hemisphere is tilted towards the Sun.

• 4-The southern hemisphere is tilted away from the Sun.

• 1-The southern hemisphere is at its farthest point from the Sun.

• 3-The southern hemisphere its closest point to the Sun.

The Northern Hemisphere experiences the beginning of spring when Earth is in –

• Position 1

• Position 2

• Position 3

• Position 4

A student is tracking the frequency of spring tides. Based on the Moon's orbital path shown in the diagram, how often does the Moon's position cause spring tides on Earth? (HINT: SNEF: 180 degrees angle)

• 1 and 2

• 1 and 3

• 2 and 4

• 1 and 4

Which feature of Earth's surface provides direct evidence of plate movement over millions of years?

• Formation of volcanic islands

• Fossilized coral reefs in shallow seas

• Matching mountain ranges on different continents

• Formation of caves through erosion

A scientist is studying changes in Earth’s crust. The scientist discovers an area with the tectonic plate movement shown in the diagram.

• The plates are moving apart creating a ridge.

• The plates are sliding past each other creating a mountain.

• The oceanic crust is subducting under the continental crust creating a volcano.

• The continental crust is subducting under the oceanic crust creating a volcano.

Which of the following describes a possible effect of the tectonic plate movement shown?

• A mountain range will form because a continental plate is moving beneath an oceanic plate, causing liquid rock to build up.

• A mountain range will form because a continental plate is moving beneath an oceanic plate, creating a divergent boundary.

• A volcano will form because an oceanic plate is moving under a continental plate, causing pressure to build up.

• A volcano will form because a continental plate is colliding with an oceanic plate, causing a strike-slip boundary to form.