The Earth

1. Which planet is the only one in the solar system that scientists can study in great detail?

• A. Mars

• B. Venus

• C. Jupiter

• D. Earth

2. What tool allows scientists to measure atmospheric conditions from the ground to the “edge of space”?

• A. Telescopes

• 
  B. Surface instruments and space vehicles
  
  

• C. Satellites only

• D. Microscopes

3. What branch of science studies Earth’s surface features and their changes over time?

• A. Astronomy

• B. Meteorology

• 
  
  C. Geology
  
  

• D. Oceanography

4. The Earth’s interior is divided into which three main layers?

• A. Core, crust, lithosphere

• B. Core, mantle, crust

• C. mantle, crust

• D. Crust, ocean, mantle

5. Studying Earth’s structure helps scientists understand:

• A. Only Earth’s oceans

• 
  B. Other similar planets
  
  
  

• C. Only the Moon

• D. Ancient civilizations

6. Which of the following is a numerical quantity used to compare objects in the solar system?

• A. Surface color

• 
  
  
  
  B. Gravitational acceleration

• C. Weather patterns

• D. Cloud formations

7. The measure of how much matter is in an object is called:

• A.Mass
  
  
  
  

• B. Density

• C. Volume

• D. Gravity

8. The amount of mass in a given volume is known as:

• A. Weight
  
  
  

• b. Size

• C. Escape velocity

• D. Density

9. Which property determines the minimum speed needed for an object to leave a planet’s gravitational pull?

• A. Orbital speed

• B. Acceleration

• 
  
  C. Escape velocity
  
  

• D. Mass

10. Which property is not a numerical quantity used in comparing planets?

• A. Surface condition

• B. Total mass

• C. Size

• D. Density