6th Grade
What is the main cause of ocean currents and wind patterns on Earth?
(Uneven heating of the Earth’s surface)
What is the function of the ribosomes in a cell?
(They synthesize proteins)
What is the difference between mass and weight?
(Mass = amount of matter; Weight = force of gravity on mass)
What is the difference between an observation and an inference?
(Observation = using senses or tools; Inference = a conclusion based on evidence)
What type of rock is formed from cooling lava?
(Igneous rock)
What term describes the narrow region where freshwater and saltwater mix, such as where a river meets the ocean?
(Estuary)
What does homozygous dominant mean in terms of genotype?
(Two identical dominant alleles, e.g., AA)
What type of energy transformation occurs in a battery-powered flashlight?
(Chemical → electrical → light)
Why is it important to have repeated trials in an experiment?
(To increase accuracy and ensure reliability)
What body system works with the respiratory system to transport oxygen?
(Circulatory system)
How does the tilt of the Earth affect the seasons?
(It causes different angles of sunlight to hit the Earth throughout the year)
How do behavioral and structural adaptations differ? How does a food web differ from a food chain? (A food web shows many interconnected food chains and energy flow)500How does genetic variation contribute to evolution? (It increases the chances that some individuals can survive environmental changes)
(Behavioral = actions; Structural = physical traits)
What is the difference between a mixture and a compound?
(Mixtures are physically combined and can be separated; compounds are chemically bonded)
What is the dependent variable in this experiment: “How does temperature affect plant growth?”
(Plant growth)
In a series circuit, what happens to the brightness of bulbs as more are added?
(They get dimmer, because resistance increases)
What atmospheric layer protects Earth from most meteoroids and absorbs UV radiation?
(Mesosphere and ozone layer in the stratosphere)
How does a food web differ from a food chain?
(A food web shows many interconnected food chains and energy flow)
Describe Newton’s Third Law with a real-life example.
(For every action, there is an equal and opposite reaction — e.g., a rocket launch)
What is meant by a “qualitative” observation?
(An observation that describes qualities like color or texture — not measured in numbers)
How does deforestation affect the carbon cycle? What is the significance of DNA being in all living organisms? (It serves as the universal code for heredity, supporting common ancestry)
(Reduces the amount of carbon dioxide removed from the atmosphere)
Describe how convection currents in the mantle contribute to plate tectonics.
(Hot magma rises, cools, and sinks, causing plates to move)
How does genetic variation contribute to evolution?
(It increases the chances that some individuals can survive environmental changes)
How do frequency and wavelength relate in the electromagnetic spectrum?
(As frequency increases, wavelength decreases — they are inversely related)
What makes a scientific hypothesis testable?
(It must be specific and measurable, and able to be supported or refuted through experimentation)
What is the significance of DNA being in all living organisms?
(It serves as the universal code for heredity, supporting common ancestry)