Science STAAR 2024

A clear liquid from a flask is poured into another clear liquid in a beaker. Which of the following results of this procedure would indicate a new substance was formed?

• The level of the substance in the beaker is higher after the other liquid is added.

• A yellow solid forms and then settles to the bottom of the beaker.

• Small white crystals are left behind in the flask that held the first liquid.

Tags

NGSS.MS-PS1-2

• 4N 
• 6N 
• 10 N 
• 14 N 

Tags

NGSS.MS-PS2-2

• The cart was stationary with a velocity of 0 m/s for the entire 7 seconds. 
• The cart was stationary except for a short burst of acceleration of 0.5 m/s^2 . 
• The cart moved at a constant velocity of 0.5 m/s for the entire 7 seconds.
• The cart accelerated at a constant rate of approximately 0.8 m/s^2 . 

Tags

NGSS.MS-PS2-2

• As the fuel burns, gases push against the rocket, moving it upward. 
• As the fuel burns, gases move out of the rocket and reduce air resistance. 
• As the fuel burns, the mass of the rocket decreases. 
• As the fuel burns, the rocket moves faster. 

Tags

NGSS.MS-PS2-1

What is the term for the amount of matter in an object?

• Weight

• Density

• Mass

• Volume

What is the term for the movement of particles from an area of higher concentration to an area of lower concentration?

• Osmosis

• Diffusion

• Active transport

• Endocytosis

What is the primary function of the chloroplasts in plant cells?

• To break down sugar molecules to release energy

• To store water and nutrients

• To capture light energy and convert it into chemical energy

• To control the entry and exit of substances in and out of the cell

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following is a chemical change?

• Dissolving salt in water

• Boiling water

• Burning wood

• Melting ice

Tags

NGSS.MS-PS1-2

Which of the following is NOT a renewable resource?

• Solar energy

• Wind energy

• Coal

• Hydroelectric power

What type of symbiotic relationship benefits one organism without harming the other?

• Mutualism

• Commensalism

• Parasitism

• Predation