1st pd - Semester 1 Assessment

Front

What are the polar easterlies?

Back

The polar easterlies are winds that blow from east to west near the poles.

Front

How do you calculate acceleration?

Back

Acceleration can be calculated using the formula: a = F/m, where 'a' is acceleration, 'F' is net force, and 'm' is mass.

Front

What is the molar mass of water (H2O)?

Back

The molar mass of water (H2O) is approximately 18 g/mol.

Front

How many atoms are in 2H2O?

Back

In 2H2O, there are 2 hydrogen atoms and 1 oxygen atom per molecule, totaling 4 hydrogen atoms and 2 oxygen atoms.

Front

What is the primary difference in star composition between spiral and elliptical galaxies?

Back

Spiral galaxies contain a mix of young and old stars, while elliptical galaxies mostly contain older stars.

Front

What is the formula for calculating force?

Back

Force can be calculated using the formula: F = m * a, where 'F' is force, 'm' is mass, and 'a' is acceleration.

Front

What is the significance of the net force in motion?

Back

The net force determines the acceleration of an object according to Newton's second law of motion.

Front

What is the chemical formula for sulfur dioxide?

Back

The chemical formula for sulfur dioxide is SO2.

Front

How do you determine the number of atoms in a compound?

Back

To determine the number of atoms in a compound, multiply the subscript of each element by the coefficient in front of the compound.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.