8th Grade Science Final Exam SY 23-24

What is the difference between the inner planets and the outer planets?

• The outer planets are smaller than the inner planets 
• The inner planets are smaller than the outer planets
• The outer planets have more rocks than the inner planets
• the inner planets are heavier than  the outer planets

The gas giants are different from the terrestrial planets because they

• have smaller atmospheres
• are less dense
• have larger atmospheres
• are more colorful

The inner planets are called terrestrial planets because they are composed of

• water
• gas
• frozen surfaces
• rocks

One factor that makes life possible on Earth is

• an atmospher
• water
• greenhouse effect
• gravity

Which planet is tipped on its side nearly 90 degrees?

• Jupiter
• Saturn
• Uranus
• Neptune

Who stated the earth was the center of the solar system?

• Ptolemy
• Copernicus
• Kepler
• Galileo

Waves transfer

• Matter
• Molecules
• Energy
• Atoms

2. What property of a wave is represented by letter B?

• A. Wavelength
• B. Amplitude
• C. Speed
• D. Frequency

6. Which of the following can act as media for a wave?

• A. Solids only
• B. Liquids only
• C. Gases only
• D. Solids, liquids, and gases

7. Which of the following occurs as the frequency of a wave decreases?

• A. The wavelength increases
• B. The wavelength decreases
• C. The wavelength increases and then decreases
• D. The wavelength remains the same