Physical Science Quarter 2 Summative Exam

Which time of the year did Eratosthenes observe the pillar in Alexandria casted a shadow?

• noon time during spring

• noon time during summer solstice

• noon time during solar eclipse

• noon time during winter solstice

Which among the Greek philosophers computed the Earth’s circumference?

• Eratosthenes

• Pythagoras

• Plato

• Aristotle

Which of the following casts a shadow on the moon during lunar eclipse when it is observe here on Earth without the aid of a telescope?

• Sun

• Earth

• North star

• Moon

What is the major contribution of Tycho Brahe to the field of astronomy?

• the invention of telescope

• the Earth’s axis of rotation

• measurement of Earth’ circumference

• accurate measurement of stars’ and planets’ position

 

What relationship between the times of revolutions of the planets and their distance from the Sun did Kepler discover?

• The cube of the times of revolution of the planets are proportional to the square of their average distance from the Sun.

• The cube of the times of revolution of the planets are not proportional to the square of their average distance from the Sun.

• The square of the times of revolution of the planets are proportional to the cube of their average distance from the Sun.

• The square of the times of revolution of the planets are not proportional to the cube of their average distance from the Sun.

Kepler discovered that planets do not go around the Sun at a uniform speed, but it depends on it position relative to the Sun. What is its speed when it is farther from the Sun?

• faster

• neither fast nor slow

• slower

• similar to the speed when it is closer to the sun

 

What is the straight-line motion caused by the gravitational pull of the earth?

• free fall motion

• horizontal motion

• projectile motion

Suppose you are standing in the aisle of a moving bus. If the driver suddenly makes a left turn, why are you likely to lurch to the right? Because of

• an equilibrium challenge

• an unbalanced force

• your momentum

• your tendency to keep moving forward

Why do a coconut and a bird's feather falling from a tree through the air to the ground below gain speed?

• their velocity changes

• there is a gravitational force acts on them

• their inertia

• their nature to become closer to the Earth

Which of the following statements is true?

• A body can have a constant direction but varying speed and still be accelerating

• A body can have a constant speed but varying direction and still be accelerating

• A body can have varying speed and direction and still be accelerating

• All of these