UPU0005 Science Internal Practice Exam Flashcards

Vocabulary and concept flashcards derived from the Science Internal Practice Exam (UPU0005) covering metric conversions, scientific method, microscopy, and atomic structure.

Metric Conversion: Grams to Milligrams

$1\,g = 1000\,mg$ (Example: $78\,g = 78000\,mg$)

Metric Conversion: Millimeters to Meters

$1000\,mm = 1\,m$ (Example: $590\,mm = 0.590\,m$)

Metric Conversion: Liters to Milliliters

$1\,L = 1000\,mL$ (Example: $0.333\,L = 333\,mL$)

Metric Conversion: Kilograms to Grams

$1\,kg = 1000\,g$ (Example: $0.050\,kg = 50\,g$)

Scientific Notation (Large Numbers)

A way to present large numbers; for example, 45.987 is expressed as $4.5987 \times 10^1$.

Scientific Notation (Small Numbers)

A way to present small numbers; for example, 0.00199 is expressed as $1.99 \times 10^{-3}$.

Systemic Error

An error due to a consistent variation in the measuring instrument, method used or operator.

Scientific Method Steps

The four stages of a scientific experiment: 1. Planning, 2. Conducting, 3. Processing, and 4. Evaluating.

Planning (Scientific Method)

The step involving identifying and analysing the problem, identifying variables, formulating a research question or Hypothesis and prediction, planning the design, and listing the procedure.

High Power Objective Procedure

The correct sequence: Place the slide on the stage, focus under low power, swing the high power objective into place, and adjust the fine focus.

Chemical Symbol for Oxygen

O

Chemical Symbol for Lithium

Li

Mean (Average)

The calculated average of a data set; for example, the mean value of 6 houses totaling different values divided by 6.

Median

The middle value in a data set; for example, the median for trials of 36.00, 37.00, and 38.00 is 37.00.

Neutron Calculation Formula

Subtract the Atomic number from the Atomic mass number.

Copper (Cu) Atomic Properties

Atomic number is 29 (29 Protons, 29 Electrons) and rounded mass number is 64, resulting in 35 Neutrons.

Tungsten (W) Atomic Properties

Atomic number is 74 (74 Protons, 74 Electrons) and rounded mass number is 184, resulting in 110 Neutrons.

Electron Microscope

A microscope that uses beams of tiny particles called electrons instead of light and can magnify up to a million times.

TEM

Transmission electron microscope; used for observing inner structures of cells like mitochondria, ribosome, and endoplasmic reticulum.

SEM

Scanning electron microscope; used for industrial metals, geological samples, or biological specimens like spores, insects, and cells.