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5th Grade Science STAAR Review

Scientists use different tools for different jobs. The tools include thermometers, rulers, stopwatches, graduated cylinders, and balance scales
Triple-beam balances Have three numbers that are added together to find the mass of an object.
During experiments Be safe, follow lab rules, and talk to the teacher if there is a problem.
In order for an investigation to have valid results: You must do at least 3 trials. Scientists repeat their experiments several times until they can verify their results and then draw valid conclusions.
When you do an experiment: Everything should be kept the same except what you are testing.
How many variables in an investigation can be changed? One variable. Everything else must remain the same.
Finding out what has changed and what is being measured: Can help identify the question being tested.
Priority in any science investigation Safety first.
Liquids Never breathe in any.
Safety with clothing Goggles when working with any liquid. Tie back long hair or long sleeves. Apron.
Know safety symbols eye protection, apron, toxic chemicals, gloves, recycle, flammable, fire extinguisher, no open flames, electrical hazard
What should you always do AFTER an experiment? Wash hands.
Length can be measured with: metric ruler or meter stick
Mass is measured with a: balance (which can be a simple pan balance or triple beam balance).
Time is measured with: stopwatch or timer
Volume is measured with: graduated cylinder, beaker or measuring cup.
Collecting net can be used to: catch flying or swimming critters.
Thermometer Tool used to measure temperature.
Scientists measure temperature in: Celsius
Safety goggles Used to protect your eyes when ding experiments in lab.
Scale with spring Used to measure weight. It is measured in metric units (milligram, gram and kilogram).
Apron Used to protect clothing and chest area while working on experiments.
Triple beam balance Used to measure MASS in the metric system. Each bar represents a different place value hundreds, tens and ones.
Double pan balance Used to compare mass to a known mass (always using metric weights).
Microscope Used to observe objects too small for the eye.
Hand lenses Use to observe details of materials or to observe objects closely.
Graduated cylinder Used to measure liquids in milliliters (mL) and liters (L).
Meter stick Used to measure length of items using the metric system.
Measuring cups Used to measure larger quantities of water in metric units.
Stop watch Used to record beginning and ending times during lab work and experiments.
Compass Used to find the direction in relation to the North Pole
Collecting nets Used to collect samples of animals, plant life, etc
Hot plate Used to heat items, usually liquids - wear gloves
Magnets Used to test the magnetism of different metals and metallic mixtures
In the metric system, length is measured in: meters
In the metric system, mass is measured in: grams
In the metric system, volume is measured in: liters
The metric system is based on: the number 10 and multiples of 10, such as 100 and 1,000. This makes it easy to change from one unit to another unit.
The freezing and melting temperature of pure water is always: 0 degrees Celsius.
The boiling temperature of pure water is always: 100 degrees Celsius.
Living things are called: Organisms. This includes both plants and animals.
Plants have 3 main parts: the roots, the stem, and the leaves.
Roots take in water
The stem moves the water through the plant
The leaves trap sunlight (in the chloroplast in the cells) and take in carbon dioxide.
Photosynthesis Process where plants make their own food
Water, sunlight and carbon dioxide enter the plant during this process: photosynthesis
Energy from the sun turns the water and carbon dioxide into sugar (plant's food)
What leaves the plant after the process of photosynthesis? Oxygen
Why do plants have many adaptations? To allow them to survive in their environment.
Example of a plant adaptation? Cactus: has thorns instead of leaves to avoid excessive evaporation of water. Rose: thorns to prevent them from being eaten. Pine tree leaf: doesn't allow a lot of water to be lost.