General Science (Grades 6-8) Flashcards
6 cards from real MAP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 General Science (Grades 6-8) flashcards as text
Which layer of Earth is composed of molten (liquid) rock?
Answer: Outer core
Earth's outer core is composed of liquid iron and nickel. The inner core is solid, the mantle is mostly solid (with some plasticity), and the crust is solid.
What is the relationship between an organism's genotype and phenotype?
Answer: Genotype is the genetic makeup; phenotype is the observable physical traits
Genotype is the genetic information (alleles) an organism carries. Phenotype is the observable physical expression of those genes (appearance, behavior, etc.).
What is the law of conservation of energy?
Answer: Energy cannot be created or destroyed; it can only change forms
The Law of Conservation of Energy states that energy cannot be created or destroyed — it can only be converted from one form to another.
Which of the following correctly describes the difference between mitosis and meiosis?
Answer: Mitosis produces 2 identical body cells; meiosis produces 4 genetically unique sex cells
Mitosis produces 2 genetically identical daughter cells (for growth and repair). Meiosis produces 4 genetically unique haploid sex cells (gametes) for sexual reproduction.
A student measures the mass of substances before and after a chemical reaction. If 50 grams react and all products are collected, what total mass would be expected?
Answer: Exactly 50 grams
According to the Law of Conservation of Mass, mass is neither created nor destroyed in a chemical reaction — the total mass of reactants equals the total mass of products.
What causes the seasons on Earth?
Answer: The tilt of Earth's axis as it orbits the sun
Earth's axial tilt (23.5 degrees) causes seasons. When a hemisphere is tilted toward the sun, it receives more direct sunlight and experiences summer. When tilted away, it experiences winter.