10 Days to STAAR: Day 9 Quiz

1. Students have these tools available to help them separate mixtures.

Which statement describes a way to best separate a mixture quickly using one or more of the tools?

• Tweezers can be used to quickly separate a mixture of salt and sugar.

• A magnet can be used to quickly separate a mixture of steel screws and iron nails.

• A strainer can be used to quickly separate a mixture of sand and gravel.

• A filter can be used to quickly separate a mixture of beads, marbles, and sand.

2. A soccer player kicked a ball at the wall. 

A overhead-view diagram of the kick is shown below. 

Which letter in the diagram is the best prediction of the ball's new position after it bounces off of the wall? 

• A

• B

• C

• D

3. This roadside is located on the side of a steep mountain. A winding road travels up and around the mountainside. 

After a heavy rainfall, travelers should be MOST concerned about a possible _______________ affecting the roadway. 

• Earthquake

• Volcanic eruption

• Landslide

• Flood

Which type of data would a climatologist study?

• The amount of rainfall in last night's storm

• The high wind speeds associated with a warm front

• The average high temperatures in June for the past 50 years

• The anticipated track of a hurricane that will make landfall later this week

Which of the following is most responsible for the changing seasons on Earth?

• Earth's rotation on its axis

• Earth's tilted axis as it orbits around the Sun

• The position of the Moon as it orbits around the Sun

• The distance of the Earth from the Sun

6. Students listed observations that they made when observing aquariums and terrariums at a nature center. 

Which TWO observations involve an interaction between two biotic factors in the ecosystem? 

• A bearded dragon eats a cricket.

• A turtle basks on a rock below a lamp.

• A fish eats aquatic plants.

• A snake rests on a heated mat.

7. A calendar for the months of September and October is shown below. 

A new moon occurred on October 2. 

Which TWO statements correctly describe other moon phases that occurred during these two months? 

• A full moon occurred October 1st.

• A new moon occurred October 12th.

• A full moon occurred September 10th.

• A new moon occurred September 3rd.

• A full moon occurred September 18th.

8. This question has two parts. 

A student has three spheres. Each sphere is made of either copper, iron, or steel. They each have a mass of 30 grams. The student is unsure which sphere is which. 

Part A

How can the student determine which sphere is made of copper? 

• Place each sphere between cut wires in a circuit to see if it conducts electricity.

• Place each sphere in a tub of water.

• Roll each sphere down a ramp.

• Place each sphere next to a magnet.

A student has three spheres. Each sphere is made of either copper, iron, or steel. They each have a mass of 30 grams. The student is unsure which sphere is which. 

B. What statement best supports the method to determine the copper sphere?

• Copper will roll faster than the other metals.

• Copper is a conductor of electricity.

• Copper is more dense than water.

• Copper is nonmagnetic.

Which tool can be used to quickly separate a mixture of sand and gravel?

• A magnet

• A filter

• Tweezers

• A strainer