ISASP Science 3

Question 1

Earth's tectonic plates move because of convection currents in the:

Accepted Answer

Mantle

Answer

Heat-driven convection currents in the semi-fluid mantle cause tectonic plates to move.

Question 2

A student mixes vinegar and baking soda and observes bubbling and fizzing. This is evidence of a:

Accepted Answer

Chemical change because a new gas is produced

Answer

The production of carbon dioxide gas (CO₂) is a new substance, indicating a chemical change has occurred.

Question 3

Which organelle is responsible for producing energy (ATP) in animal cells through cellular respiration?

Accepted Answer

Mitochondria

Answer

Mitochondria carry out cellular respiration, converting glucose and oxygen into ATP energy the cell can use.

Question 4

The Law of Conservation of Mass states that in a chemical reaction:

Accepted Answer

The total mass of products equals the total mass of reactants

Answer

Matter is neither created nor destroyed in a chemical reaction, so the total mass of reactants equals the total mass of products.

Question 5

A student swings a pendulum and measures how long each swing takes. Which factor will most affect the period (time per swing) of the pendulum?

Accepted Answer

The length of the string

Answer

The length of the pendulum string is the primary factor determining its period; longer strings produce slower swings.

ISASP - Iowa Statewide Assessment of Student Progress Practice Test