THIRD GRADE

Science Week One

•Scientist’s use attributes to classify objects. What is an attribute?

•An attribute is a characteristic or a property of an object or living thing

•Which group, invertebrates or vertebrates, does a snake belong to?

•vertebrates

•What two attributes could you use to sort a collection of rocks?

•size, shape, color, texture, or edges

• The life cycle of a mealworm has four stages, the egg, larva, __________ , and adult. Which stage is missing?

•pupa

What is the correct order of the growth of a bean seed?

D, B, A, C

•What is a testable question?

•A question in which an experiment is needed to find the answer.

•Which question is testable?

A. What affects the time it takes ice to melt?

B. What is water?

A. What affects the time it takes ice to melt?

•Which word prediction or conclusion means an idea of what will happen in the future?

•prediction

• Your class is investigating the speed of water drops on a slope. You think the steeper the slope the greater the speed. What have you just made?

  

•a prediction

• Kathleen writes the following observation in her science notebook: My rabbit is black, has four legs, and feels soft. Is that a scientific observation or an unscientific observation?

Kathleen writes the following observation in her science notebook: My rabbit is black, has four legs, and feels soft. Is that a scientific observation or an unscientific observation?

•It is a scientific observation.

• Kathleen also wrote in her science notebook that the rabbit is a sweet and happy bunny. Is that a scientific observation or an unscientific observation? Why?

•It is an unscientific observation because it is an opinion.

•What does a beaker, a graduated cylinder and a syringe measure?

•They measure liquid volume.

What tool is this?

It is a graduat

ed cylinder

?

• What metric units can you use when measuring the volume of liquids?

•milliliters (mL) or liters (L)

•What can you measure with a meter tape?

•length, height, width and distance

What tool is this and what is it used for?

• Tweezers • It is used to pick up small materials.

What tools are these and what are

they used for?

•These are beakers and they are used for measuring the volume of liquid.

What kind of graph is shown

below? Which pet do most kids

have?

•It is a bar graph.

•fish

Ice cubes have been placed in two cups of

water at different temperatures.

Warm Water A

Cold Water B

10 cubes 4:00pm 10 cubes 4:00pm

2 cubes 4:45pm 4 cubes 4:45pm

Using the table, what conclusion can

you make?

•Ice cubes melt faster in warm water.

• Two students were measuring the volume of milk in their milk cartons from lunch. They both used a graduated cylinder but didn’t get the same answer. What could have happened to cause a difference in their results?

• Measurements may have been read or recorded incorrectly.

• One child might have taken a sip from the milk carton.

• Students are taking mock rocks apart with a nail. What safety equipment should they use to protect their eyes?

•goggles

• Students were handling crayfish during an investigation. What safety procedures should they follow when they are finished?

•Students should wash their hands.