Acap Practice Physical Science

What Is natural selection?

• living things adapt to their environment to survive and produce more offspring

• Living things eat and hunt lesser creatures so they are not the one eaten

• The way natural works on its own

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-4

Changes in physical structure, function, or behavior that allow an organism to survive

• Adaptation

• Mutation

• Camouflage

• Interdependence

Tags

NGSS.MS-LS4-4

Coloring of markings that help or organism blend in with its surroundings

• Adaptation

• Trait

• Camouflage

• Mutation

Tags

NGSS.MS-LS4-4

How is the balloon able to pick up the pieces of paper?

• Frictional force is overcoming gravitational force.

• Magnetic force is overcoming electrical force.

• Electrical force is overcoming gravitational force.

• Gravitational force is overcoming magnetic force.

Tags

NGSS.MS-PS2-5

The part of an atom that would be found outside the nucleus is the _______.

• electron

• positron

• proton

• neutron

A student was studying chemical reactions. He followed these steps in an investigation:Label one test tube X and another similar test tube Y.Fill each test tube with 25 mL of the same acid solution.Add 25 mL of the same salt solution to each test tube.Carefully place test tube X in a beaker of water on a hot plate and increase the temperature.Place test tube Y in a test tube holder on the table.Record observations.The student observed that a color change in test tube X occured faster than in test tube Y. Why did this happen?

• Raising the temperature increased the number of particles in the test tube.

• When the temperature was raised, the particles collided faster.

• Raising the temperature increased the air pressure around the test tube.

• When the temperature was raised, the particles became lighter.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Using the propeller, a person can wind up the rubber band so that it is wound and tight. Upon release of the propeller, the rubber band quickly unwinds causing the propeller to spin and aid the toy plane in flight. Which statement best describes what energy transformation occurs upon release of the toy airplane's propeller?

• Potential energy is being transformed into kinetic energy.

• Kinetic energy is being transformed into potential energy.

• Thermal energy is being transformed into mechanical energy.

• Mechanical energy is being transformed into chemical energy.

Tags

NGSS.MS-PS3-5

The image is of a heating can. When the activating button is pushed, water mixes with calcium oxide. This produces calcium hydroxide in a chemical reaction which gives off heat. The heat warms up the food. What happens when this reaction occurs in the closed can?

• The mass of the can and its contents increases.

• The mass of only the food in the can decreases.

• The mass of the can and its contents remains the same.

• The mass of the can and its contents decreases.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

If an object is moving at a constant speed in one direction, what is needed to change its speed or direction?

• a long period of time

• a balanced force

• an unbalanced force

• a short period of time

Tags

NGSS.MS-PS2-2

When substances are mixed and heated, a change can occur. The image below shows what happens when sodium is added to chlorine gas and burned. What demonstrates that this was a chemical change and not a physical change?

• Both the solid sodium and the sodium chloride formed are solids.

• Two substances with different properties were mixed together.

• A new substance was formed when the sodium was burned.

• Mass was conserved after the chlorine and sodium were mixed and heated.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5