Q3-SCIENCE 4-FORCE,MOTION,& ENERGY

1.The "father of gravity" is considered to be _______.

• Isaac Newton

• Dr. Jose Rizal

• Galileo Galilei

Answer explanation

Sir Isaac Newton (1642–1727) is known as the father of gravity because he was the first to mathematically formulate the theory of gravity. 

2._______ is a push or pull.

• Force

• Motion

• Energy

Answer explanation

A force can move an object which is at rest.

3.Forces can make an object swerve and change directions.

• True

• False

Answer explanation

A force is a push or pull exerted on an object, which can change its state of motion, including its direction. 

4._______is when something moves from one place to another.

 

• Force

• Motion

• Energy

Answer explanation

When something moves from one place to another, it is called motion. 

5._______ is the major source of natural light.

• Flashlight

• Bonfire

• Sun

Answer explanation

The Sun is the major source of light for the earth. The sun is a massive ball of fire, at the center of which nuclear fusion produces massive energy. This energy comes out as heat and light. The light from the sun is one of the major factors behind the sustainability of life on earth.

6._______ is the length of their wave speed, crests, and troughs. The higher the frequency, the shorter the wavelength.

• Frequency

• Reflection

• Wavelength

Answer explanation

The shorter wavelength sound has the higher frequency. Both sounds travel at the same speed. When the sound goes from cooler to warmer air, its speed increases (because sound travels faster in warmer air).

7.Is it push or pull?

• Push

• Pull

8.Is it push or pull?

9._______allows light to pass through it. Water, clear glass, and some kinds of plastics are transparent materials.

• Transparent materials

• Translucent materials

• Opaque materials

Answer explanation

If an object or material is transparent, it means light completely passes through it, and you can see clearly through it.

10.Echo is also called_______.

• Construction

• Reverberation

• Instruction

Answer explanation

Reverberation is a phenomenon created by multiple echoes bouncing off surfaces in a confined space, making the sound seem to persist after the original sound source has stopped