Microscopes
What device lets you see very small things that you cannot see with just your eyes?
Microscope
What do you put into a toy or flashlight to make it turn on that gives electrical power?
Battery
Which word tells how much "stuff" is inside an object: mass or weight?
Mass
Before starting an experiment, what should you always put on to protect your eyes if the teacher tells you to?
Safety Goggles
Which tool would you use to measure how much liquid fits in a cup: a ruler or a measuring cup?
Measuring Cup
Name one thing you might look at under a microscope in a classroom
Plant leaf / insect wing / pond water
Name two common sizes of single batteries used in flashlights or remotes
AA, AAA
Which changes if you go to the Moon: mass or weight?
Weight
True or False: It is okay to taste chemicals during a science experiment.
False
What unit might you see on a measuring cup for liquids in the metric system: liters or grams?
Liters
Which part of the microscope do you look through with your eye?
Eyepiece
If a flashlight's battery is dead, what should you do with that battery?
Put it in the designated battery recycling or disposal container
If two rocks look the same size but one is heavier to pick up, which rock has more mass?
The heavier one has more mass
If there is a spill on the table during an experiment, what should you do first?
Tell the teacher immediately and follow their instructions
If a container holds 1 liter of water, how many milliliters is that?
1000mL
When you switch to a higher magnification on a microscope, do objects look larger or smaller?
Larger
What two things do batteries provide to a device: power and ______?
Energy or electricity
Fill in the blank: Weight is a measure of how hard gravity is pulling on an object's ______.
Mass
Why is it important to tie back long hair and remove loose jewelry before some experiments?
To prevent hair or jewelry from catching on equipment or getting into materials and to keep students safe
You pour water from a 500 mL bottle into two equal cups. How many milliliters are in each cup?
250mL
True or False: Microscopes can help scientists see cells.
True
When you put batteries in a device, what two things must you match so it works: the battery size and the ________?
Polarity (match + and −)
True or False: Mass is the same everywhere, but weight can change if gravity changes.
True
List three simple classroom safety rules to follow during labs (examples appropriate for 3rd grade).
Wear goggles when asked; never taste chemicals; follow teacher directions; keep your workspace clean
When measuring the volume of an irregular solid (like a small rock) using water displacement, what do you observe to find volume?
Measure how much the water level rises when the rock is placed in the water; that rise equals the rock's volume in mL or cubic centimeters