STAAR Science Category 2

What is force?

• push or pull on an object. 

• Can cause an object to move, stop, or change direction

• All of the above

Tags

NGSS.3-PS2-1

The picture shows a pulley system that can be used to lift a box. Which of these should a person do to lift the box? (3.6B)

• Tie the end of the rope to the box

• Tie the end of the rope to the ceiling hook

• Pull the end of the rope downward

• Allow the end of the rope to move upward

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

The two pictures show part of an investigation. A magnet, a book, and a paper clip are on a sheet of lined paper. In Picture 1 a student slides a magnet closer to the book. The student holds the book still in both pictures. Which statement about this investigation can be supported by the result shown? (3.6B)

• Work was done on the magnet, the book, and the paper clip.

• Work was done on the magnet and the paper clip only.

• Work was done on the magnet and the book only.

• Work was done on the magnet only.

Tags

NGSS.MS-PS2-5

A mixture of beads was placed in a container, as shown below. The beads are of various sizes, and each one is made of plastic, glass or steel. The mixture would be easy to separate because all the beads....

• are less dense than water

• are solids

• have the same mass

• are attracted to magnets

Tags

NGSS.MS-PS2-3

How would you separate a mixture of sand and salt? 

• Mix them with water and let the water evaporate

• Mix them with water, pour the mixture through a sieve, then let the water evaporate

• Heat the sand and salt mixture for 5 minutes, then let it cool

• I would not do any of these because none of these options would work

Liquid water can be changed to a gas by which of the following?

• freezing 

• boiling

• melting       

Tags

NGSS.MS-PS1-4

The diagram shows a view of a ball from above a table. The ball is rolling across the table. A student lightly taps the rolling ball in the direction shown in the picture. In which direction does the ball most likely move after the student taps the ball? (3.6B)

• 
• 
• 
• 

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Four students stand facing a box. The diagram below shows an overhead view of the box. The numbered circles represent the positions of the students. What do the students need to do to slide the box to the northeast? (3.6B)

• Students 1 and 2 push, and Students 3 and 4 pull.

• Students 1 and 4 push, and Students 2 and 3 pull.

• Students 2 and 3 push, and Students 1 and 4 pull.

• Students 3 and 4 push, and Students 1 and 2 pull.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Two students are playing on a swing set. Student 1 is leaning back and extending her legs as she moves upward. Student 2 is sitting on the swing with his feet on the ground. Which statement describes how position and work are related in this picture? (3.6B)

• Both students are doing work even if only one student is changing position.

• Student 1 is changing position because work is being done on the swing.

• Work done by Earth's gravity prevents Student 2 from changing position.

• Work is being done on both students by the swings because one swing is changing position.

Tags

NGSS.MS-PS2-4

What is the primary function of the mitochondria in a cell?

• A) Photosynthesis

• B) Cellular respiration

• C) Protein synthesis

• D) DNA replication

Tags

NGSS.MS-LS1-7