Science 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 Science flashcards as text
What is the main function of the roots in a plant?
Answer: To anchor the plant and absorb nutrients
Plant roots serve two primary functions essential for the plant's survival. Firstly, they firmly anchor the plant in the soil, providing stability against wind and other forces. Secondly, they are responsible for absorbing water and dissolved mineral nutrients from the soil, which are then transported to other parts of the plant for growth and metabolic processes.
Which property of matter is measured using a balance?
Answer: Mass
A balance is a scientific instrument specifically designed to measure the mass of an object. Mass is a fundamental property representing the amount of matter in an object, and a balance works by comparing an unknown mass to a known mass. While related to weight, which is a force, a balance directly measures mass, making it the correct tool for this property.
What causes day and night on Earth?
Answer: Earth's rotation
Day and night on Earth are caused by the planet's continuous rotation on its axis. As Earth spins, different parts of its surface are illuminated by the sun, resulting in daytime, while the parts facing away experience darkness, leading to nighttime. This rotation completes approximately every 24 hours, creating the daily cycle.
Which state of matter has a definite volume but no definite shape?
Answer: Liquid
A liquid is a state of matter characterized by particles that are close together but can move freely past one another. This allows a liquid to maintain a definite volume, as its particles are still bound, but it will take the shape of any container it occupies, thus lacking a definite shape of its own.
What tool is best for observing the details of a small insect?
Answer: Magnifying glass
A magnifying glass is the best tool for observing the details of a small insect because it uses a convex lens to enlarge the image of the object. This allows for a closer and more detailed examination of the insect's features that would be difficult to see with the naked eye. Other tools like a thermometer, ruler, or balance measure different properties and are not suitable for visual magnification.
Which of the following is an example of a physical change?
Answer: Melting ice
Melting ice is an example of a physical change because the substance, water (H2O), changes its state from solid to liquid but retains its chemical composition. No new substances are formed during this process; it is merely a change in form or phase. In contrast, burning wood, rusting iron, and baking a cake involve chemical reactions that create new substances.