GRADE (7) UNIT 4 LESSON 1

What is the primary factor that makes Earth habitable compared to other planets?

• Its distance from other planets

• Its combination of oxygen, water, and moderate temperatures

• Its size as the fifth-largest planet

• Its number of moons

How long does it take Earth to complete one full orbit around the Sun?

• 24 hours

• 12 months

• 365 days

• 7 days

Which layer of Earth makes up approximately 84% of the planet's mass?

• The core

• The crust

• The mantle

• The outer core

What is the primary composition of the oceanic crust?

• Aluminum and silicate

• Iron and nickel

• Silica and magnesium

• Minerals and solid rocks

Which ocean zone is known as the "Twilight Zone"?

• Bathypelagic

• Epipelagic

• Mesopelagic

• Hadalpelagic

How many planets are currently recognized in our solar system?

• Nine

• Seven

• Ten

• Eight

What is the name of Earth's only natural satellite?

• Mars

• The Moon

• Venus

• Pluto

Which part of Earth is considered the hottest?

• The mantle

• The outer core

• The crust

• The inner core

In which galaxy is our solar system located?

• Red Eye Galaxy

• Cartwheel Galaxy

• Milky Way Galaxy

• Andromeda Galaxy

What causes the alternation of day and night on Earth?

• Earth's orbit around the Sun

• Earth's rotation on its axis

• The Moon's position

• Solar flares