Final answer:
The standard metric unit of length is the meter (m). A hypothesis is a proposed explanation for a scientific problem. The standard unit of volume is the cubic meter (m³). The meniscus is the curved top surface of a liquid column. A control is a quantity in an experiment that remains constant. Mass is the amount of matter in an object.
Step-by-step explanation:
The standard metric unit of length is the meter (m). It is used to measure the extent of something along its greatest dimension. For example, the width of a room can be expressed as about 5 meters.
A hypothesis is a proposed explanation for a scientific problem. It is an educated guess that can be tested through experiments and observations.
The standard unit of volume is the cubic meter (m³). It is a derived unit based on the meter and represents the volume of a cube that is exactly 1 meter on all edges.
The meniscus is the curved top surface of a liquid column. When measuring the volume of a liquid in a graduated cylinder, the reading is taken at the bottom of the meniscus.
A control is a quantity in an experiment that remains unchanged or constant. It is used as a baseline for comparison to determine the effects of other variables.
The mass of an object is the amount of matter it contains. It is usually measured in kilograms (kg) or grams (g).