Basic 6 Science

What is the primary purpose of a food chain?

• To display animal behavior
• To illustrate plant growth
• To show feeding relationships
• To demonstrate predator-prey dynamics

Why do nearly all food chains start with green plants?

• They provide shelter for other organisms
• They can make their own food through photosynthesis
• They are the fastest-growing organisms
• They attract a diverse range of consumers

What process do plants use to make their own food?

• Respiration
• Digestion
• Photosynthesis
• Fermentation

Which of the following is an example of a reversible change?

• Rusting of iron
• Growth of a baby into an adult
• Melting of ice
• Burning of materials

Why would a person weigh less on the Moon compared to Earth?

• The gravitational field strength on the Moon is weaker
• The gravitational field strength on the Moon is stronger
• The mass of the person changes on the Moon
• The Earth's gravity is stronger than the Moon's gravity

What causes the tides in the ocean?

• The rotation of the Earth

• The gravitational pull of the Moon

• Underwater earthquakes

• Global warming

Why are rainforests important for the environment?

• To provide habitat for a diverse range of species

• To control the Earth's temperature

• To prevent natural disasters

• To create a source of renewable energy

What is the main source of energy for most living organisms?

• Wind

• Sunlight

• Geothermal heat

• Fossil fuels

What is the process by which plants convert sunlight into energy?

• Respiration

• Photosynthesis

• Fermentation

• Digestion

What is the main factor that causes the Earth's seasons?

• The tilt of the Earth's axis

• The distance from the Sun

• The rotation speed of the Earth

• The gravitational pull of the Moon