Lesson 1.5 What Are Some Science Tools? Copyright © Houghton Mifflin Harcourt Publishing Company 1

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Unit 1 Lesson 5 What Are Some Science Tools? Field Trips Field scientists go “on location” to investigate the natural world. Field scientists may use tools to complete and record investigations. Copyright © Houghton Mifflin Harcourt Publishing Company 3

What are the tools that field scientist can use ? Unit 1 Lesson 5 What Are Some Science Tools? Field Trips What are the tools that field scientist can use ? 1- collecting nets: They use it to catch small animals without harming them. Copyright © Houghton Mifflin Harcourt Publishing Company 4

2- Hand lens: To know how the ant moves or how it uses its mouthparts (focus) 3- cameras: Underwater camera to study how fishes catch their food, it help scientists to record events.

Q1 in CW :

Unit 1 Lesson 5 What Are Some Science Tools? Into the Lab In the lab, computers and other instruments (light microscopes, droppers, electron microscopes, and pipettes) can be used to complete investigations. All scientists must be comfortable using numbers to complete investigations. Copyright © Houghton Mifflin Harcourt Publishing Company 7

Q2 in CW: Into the Lab Unit 1 Lesson 5 What Are Some Science Tools? 8 Copyright © Houghton Mifflin Harcourt Publishing Company 8

Unit 1 Lesson 5 What Are Some Science Tools? Light Microscopes Microscopic things are too small to see with just your eyes. Light microscopes magnify things, or make them look bigger. The object is placed on a glass slide and light passes through the object and two lenses. The eyepiece helps to focus the image. Copyright © Houghton Mifflin Harcourt Publishing Company 9

Dropper A dropper is a tube with a rubber bulb on one end. Unit 1 Lesson 5 What Are Some Science Tools? Dropper A dropper is a tube with a rubber bulb on one end. Liquids can be sucked up the tube and dropped out of the tube by squeezing and releasing the bulb. Copyright © Houghton Mifflin Harcourt Publishing Company 10

Unit 1 Lesson 5 What Are Some Science Tools? Electron Microscope A scanning electron microscope (SEM) can magnify an object up to 1 million times. The SEM shoots a beam of electrons at the object. An image of the surface of the object appears on the computer screen. Copyright © Houghton Mifflin Harcourt Publishing Company 11

Unit 1 Lesson 5 What Are Some Science Tools? Pipette Pipettes are similar to droppers, but are more exact and can add or remove very small amounts of liquids. Markings on a pipette can help a scientist measure the volume of a liquid. Copyright © Houghton Mifflin Harcourt Publishing Company 12

Unit 1 Lesson 5 What Are Some Science Tools? Measuring Up When you measure, you make an observation involving numbers and units. Scientists use International System (SI) units, or the metric system, to make observations involving numbers. Metric system units are based on multiples of 10. Copyright © Houghton Mifflin Harcourt Publishing Company 13

Measuring Length Length is the distance between two points. Unit 1 Lesson 5 What Are Some Science Tools? Measuring Length Length is the distance between two points. Rulers, metersticks and tape measures are tools used to measure length. Copyright © Houghton Mifflin Harcourt Publishing Company 14

Measuring Length The base metric unit of length is the meter. Unit 1 Lesson 5 What Are Some Science Tools? Measuring Length The base metric unit of length is the meter. A caliper can be used to measure the distance between the two sides of a object. Copyright © Houghton Mifflin Harcourt Publishing Company 15

Measuring Length Q3 in cw: Unit 1 Lesson 5 What Are Some Science Tools? Measuring Length Q3 in cw: Copyright © Houghton Mifflin Harcourt Publishing Company 16

Measuring Time Time describes how long events take. Unit 1 Lesson 5 What Are Some Science Tools? Measuring Time Time describes how long events take. Clocks, stopwatches, timers, and calendars are some of the tools used to measure time. The base unit of time is the second. Copyright © Houghton Mifflin Harcourt Publishing Company 17

Measuring Temperature Unit 1 Lesson 5 What Are Some Science Tools? Measuring Temperature Temperature describes how hot or cold something is. Thermometers are used to measure temperature. Scientists measure temperature in degrees Celsius. Another unit used to measure temperature is degrees Fahrenheit. Copyright © Houghton Mifflin Harcourt Publishing Company 18

Balance A balance is a tool used to measure mass. Unit 1 Lesson 5 What Are Some Science Tools? Balance A balance is a tool used to measure mass. Mass is the amount of matter in an object. The base unit of mass is the kilogram. Copyright © Houghton Mifflin Harcourt Publishing Company 19

Unit 1 Lesson 5 What Are Some Science Tools? Balance A pan balance is a type of a balance that compare the masses of two objects together. A triple-beam balance is more exact than a pan balance. Copyright © Houghton Mifflin Harcourt Publishing Company 20

Unit 1 Lesson 5 What Are Some Science Tools? Balance An electronic (digital) balance calculates the mass of an object and displays the mass on a screen. Copyright © Houghton Mifflin Harcourt Publishing Company 21

How Strong? A spring scale measures force, or a push or a pull. Unit 1 Lesson 5 What Are Some Science Tools? How Strong? A spring scale measures force, or a push or a pull. The force of gravity, or an object’s weight, is measured when an object hangs from the scale. The base unit of force is called a newton. Copyright © Houghton Mifflin Harcourt Publishing Company 22

Q4 in CW! Unit 1 Lesson 5 What Are Some Science Tools? 23 Copyright © Houghton Mifflin Harcourt Publishing Company 23

More Measuring Units of Volume: Unit 1 Lesson 5 What Are Some Science Tools? More Measuring Units of Volume: Volume is the amount of space that a solid, liquid, or gas takes up. The base metric units for measuring volume are the cubic meter and the liter. The cubic meter is one meter long, one meter high, and one meter wide. One cubic centimeter (cm3) is equal to one milliliter (mL). Copyright © Houghton Mifflin Harcourt Publishing Company 24

Q5 in CW: Unit 1 Lesson 5 What Are Some Science Tools? 25 Copyright © Houghton Mifflin Harcourt Publishing Company 25

Unit 1 Lesson 5 What Are Some Science Tools? Finding Volume: Volume of a rectangular prism: Multiply the length times width times height of that object. Volume of an irregular solid: Put water in a graduated cylinder and note the volume. Add the object and note the new volume. The volume of the object is equal to the final liquid volume minus the starting liquid volume. Copyright © Houghton Mifflin Harcourt Publishing Company 26

Finding Volume: Q6 in CW: Unit 1 Lesson 5 What Are Some Science Tools? Copyright © Houghton Mifflin Harcourt Publishing Company 27

Unit 1 Lesson 5 What Are Some Science Tools? Finding Volume Liquid volume can be measured using a measuring cup, beaker, or graduated cylinder. Liquids form a meniscus, or curve, in a graduated cylinder. Always measure volume from the center of the meniscus. Copyright © Houghton Mifflin Harcourt Publishing Company 28

Accurate Measurements Unit 1 Lesson 5 What Are Some Science Tools? Accurate Measurements When a measurement is close to the true size, it is accurate. To measure accurately, handle tools properly and use the tools the same way every time. Also, make sure to measure to the smallest place value the tool allows, measure twice, and record measurements carefully. Copyright © Houghton Mifflin Harcourt Publishing Company 29

Sum it up: Unit 1 Lesson 5 What Are Some Science Tools? 30 Copyright © Houghton Mifflin Harcourt Publishing Company 30

Unit 1 Lesson 5 What Are Some Science Tools? Copyright © Houghton Mifflin Harcourt Publishing Company 31