24-25 Semester Review

Front

What word describes when water is attracted to other substances?

Back

Adhesion: The tendency of water molecules to stick to other substances, which is crucial in processes like capillary action.

Front

What law explains why it's easier to push an empty shopping cart than a full one?

Back

Newton's 2nd Law: The law of motion that states that the acceleration of an object is dependent on the mass of the object and the amount of force applied.

Front

What determines the color of a star?

Back

Temperature: The color of a star is related to its surface temperature, with hotter stars appearing blue and cooler stars appearing red.

Front

What is an object that is so massive and dense that even light cannot escape its gravity?

Back

Black Hole: A region in space where the gravitational pull is so strong that nothing, not even light, can escape from it.

Front

Which type of electromagnetic wave has the shortest wavelength and the highest energy?

Back

Gamma Rays: Electromagnetic waves with very short wavelengths and high energy, often produced by radioactive atoms and in nuclear explosions.

Front

What is cohesion in relation to water?

Back

Cohesion: The attraction between water molecules, which causes them to stick together, leading to phenomena like surface tension.

Front

What is the first law of motion?

Back

Newton's 1st Law: An object at rest stays at rest, and an object in motion stays in motion unless acted upon by an external force.

Front

What is the relationship between mass and acceleration according to Newton's 2nd Law?

Back

The relationship is that acceleration is directly proportional to the net force acting on an object and inversely proportional to its mass.

Front

What is the significance of a star's magnitude?

Back

Magnitude: A measure of a star's brightness as seen from Earth, which helps astronomers classify and compare stars.

Front

What is capillary action?

Back

Capillary Action: The ability of water to flow in narrow spaces without the assistance of external forces, due to adhesion and cohesion.