Countdown to Science STAAR 2.5 and 2.6

Which substance listed below will

dissolve when placed in a beaker of water?

• Sand

• Sugar

• Iron filings

• Pepper

Below is a diagram of a circuit.

Which bulbs will light up if both switch 1 and switch 2 are closed

and the wire is cut at the point where the scissors are located?

• Blue bulb only

• Blue and red bulb

• Blue, red and green bulb

• Red bulb only

Below is a diagram showing the processes involved in the formation of a type of

sedimentary rock called mudrock.

What two processes listed below complete the diagram?

• Erosion and Compaction

• Melting and Deposition

• Weathering and Erosion

• Deposition and Melting

Tags

NGSS.MS-ESS2-2

Egyptian plover birds and crocodile shave a symbiotic relationship. Below are four facts about plover birds.

Facts About Plover Birds

1. They have a black crown, back and eye-mask and blue-grey legs.

2. They live in sub-Saharan Africa.

3. They are sometimes referred to as the crocodile bird.

4. They feed on decaying food stuck in crocodiles’ teeth, which cleans the teeth.

Which of the facts above best describe how the bird relies on another

animal to survive?

• Fact 1

• Fact 2

• Fact 3

• Fact 4

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

The chart below lists six different traits

observed in people. A science teacher

asked students to work in groups and

assign each trait as either an inherited trait

or a learned trait. Using the information above, which

statement is correct?

• Traits 1, 3, and 5 are learned behaviors.

• Traits 2, 3, and 5 are inherited behaviors.

• Traits 3, 5, and 6 are learned behaviors

• Traits 1, 3, and 6 are learned behaviors.

Below is a picture of a fresh water

aquarium several students set up and

take care of in their science classroom.

Which of the organisms listed below is

most likely a part of the aquarium

ecosystem shown above?

• Lizard

• Ladybug

• Earthworm

• Goldfish

Tags

NGSS.MS-LS2-1

A group of students performed an experiment comparing the length of time it takes for ice cream to melt in different locations around their houses. The students placed the ice cream in plastic bowls and recorded the time of melting using a stopwatch. The students used the

table below to record their data and any observations. Based on your knowledge of changes in the state of matter caused by heating, which ice cream will melt the slowest?

• The ice cream in the refrigerator

• The ice cream on the kitchen table

• The ice cream outside on the patio

• The ice cream in the ove

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Below is a picture of lights some people hang up around the holiday season. These lights can be very frustrating, because if one lightbulb goes out, they all go out.

Why does this happen?

• If one lightbulb breaks, all the other

  lightbulbs break.

• Light waves cannot travel through a broken

  lightbulb.

• Electric current requires a complete path to

  work.

• The thermal energy cannot travel through a

  broken light bulb.