SCI Midterm

Question 1

What is a hypothesis?

Answer 1

A proposed solution to a problem or answer to a scientific question. This is what your experiment is designed to test.

Question 2

What is a inference?

Answer 2

A logical conclusion or educated guess based on observation and background knowledge or known information

Question 3

What is an independent variable?

Answer 3

What you are testing for in the experiment. Experiments are designed to isolate and test only one independent variable.

Question 4

What is an dependent variable?

Answer 4

The results of the experiment. (What you measure. The data you collect.)

Question 5

What is the experimental group?

Answer 5

The group that receives the independent variable.

Question 6

What is a control group?

Answer 6

The part of the experiment that you do not change. It is used as a benchmark or baseline to compare the effect of the independent variable.

Question 7

What is Quantitative Data?

Answer 7

Data that includes numbers and can be measured. This type of data is preferred for scientific investigations as it is quantifiable/measurable and thus can be displayed visually and compared in graphs and data tables to be analyzed.

Question 7

What are Constants or Controlled Variables?

Answer 7

Factors that are kept the same in an experiment to minimize the effects of variables other than the independent variable.

Question 8

What is Qualitative Data?

Answer 8

Descriptive information that cannot be easily measured or quantified.

Question 9

What is mass and how is it measured?

Answer 9

Mass refers to the amount of matter in an object. It is measured in units like grams (g) and kilograms (kg).

Question 10

What is volume and how is it measured?

Answer 10

Volume is the amount of space an object occupies. It can be measured in cubic units like cubic centimeters (cm³) or liters (L).

Question 11

What is density and how is it measured?

Answer 11

Density is the measure of how much mass is contained in a given volume. It is expressed in units like grams per cubic centimeter (g/cm³), (g/mL), or kilograms per liter (kg

Question 12

What is area and how is it measured?

Answer 12

Area is the measure of the amount of space inside a 2-dimensional figure. It is measured in square units like square meters (m²) or square centimeters (cm²).

Question 13

What is speed and how is it measured?

Answer 13

Speed is the measure of how quickly an object moves. It is usually expressed in units like meters per second (m/s) or kilometers per hour (km/h).

Question 14

What is temperature and how is it measured?

Answer 14

Temperature measures the thermal energy of an object or environment. It is often measured in units like degrees Celsius (°C) or Kelvin (K).

Question 15

What are SI units?

Answer 15

SI (International System of Units) is the modern form of the metric system and is the standard measurement system used in science worldwide.

Question 16

What is a balence?

Answer 16

A balance or scale is a measuring instrument used to determine the mass of an object.

Question 17

What is a graduated cylinder?

Answer 17

A graduated cylinder is a cylindrical container with volume markings used to measure the volume of liquids.

Question 18

What is a meniscus?

Answer 18

The meniscus is the curve seen at the surface of a liquid in a narrow tube, and it’s used to accurately read the volume. The correct volume is read at the bottom of the meniscus.

Question 19

What are reactants?

Answer 19

The product before a chemical reactio

Question 20

What is a product?

Answer 20

The product after a chemical reaction

Question 21

What is an ion?

Answer 21

An atom with either a positive or negative charge due to the loss or gain of electrons

Question 22

What is a isotope?

Answer 22

Variation of an element that possesses the same atomic number (same number of protons) but has a different mass number (due to a different number of neutrons)