1. Which of the following is are source obtained from plants?

a)Wood

b)Oil

c)Coal

d)Iron

3.What is the primary source of food for humans?

a)Minerals

b)Animals

c)Plants

d)Water

4.Which of the following is not a resource from living things?

a)Cotton

b)Rubber

c)Plastic

d)Fish

5.Which of the following is a by product of dairy farming?

a)Cotton

b)Milk

c)Wood

d)Leather

6.Which living resource is essential for making paper?

a)Animalskin

b)wood

c)Plastic
d)Stone

7.What do we obtain from bees?

a)Milk

b)Honey

c)Wool

d)Silk

8.Which non-living resource is essential for construction?

a)Sand

b)Wool

c)Cotton

d)Fish

9.What is the primary source of fossil fuels?

a)Minerals

b)Dead plants and animals

c)Water

d)Solarenergy

10.Which of the following is not a mineral resource?

a)Gold

b)Coal

c)Wood

d)Silver

11.What non-living resource is crucial for water purification?

a)Charcoal

b)Sand

c)Plastic
d)Stone

12.Which of the following is commonly used for making glass?

a)Silica sand

b)Granite

c)Marble

d)Clay

13.What is limestone primarily used for?

a)Fuel

b)Cement

c)Plastic

d)Paper

15.What is the speed of light in a vacuum?

a)300,000km/s

b)150,000km/s

c)100,000km/s

d)500,000km/s

16.Which of the following colors of light has the longest wavelength?

a)Red

b)Blue

c)Green

d)Violet

17.What happens to light when it hits a mirror?

a)Itabsorbs

b)Itrefracts
c)Itreflects

d)Itdisperses

18.Which instrument is used to measure light intensity?

a)Thermometer

b)Photometer

c)Barometer

d)Anemometer

19.What is the primary function of lenses in glasses?

a)To block light

b)To focus light

c)To absorb sound

d)To generate electricity

20.What phenomenon explains the bending of light?

a)Reflection

b)Refraction

c)Diffraction

d)Absorption

22.What type of light is produced by a flame?

a)Ultraviolet

b)Infrared

c)Visible

d)Radio

23.Sound energy is produced by:

a)Lightwaves

b)Vibrations
c)Magnetic fields

d)Chemical reactions

24.What medium does sound travel fastest through?

a)Air

b)Water

c)Solid

d)Vacuum

25.Which of the following describes pitch?

a)Loudness of sound

b)Quality of sound

c)Frequency of sound

d)Duration of sound

26.What device converts sound energy into electrical energy?

a)Speaker

b)Microphone

c)Amplifier

d)Receiver

27.Which of the following is a unit of sound intensity?

a)Hertz

b)Decibel

c)Joule

d)Watt

28.What happens to sound as it travels away from the source?

a)Increases in intensity

b)Decreases in intensity
c)Changes frequency

d)Stops

29.Which instrument is primarily used to measure sound levels?

a)Barometer

b)Sound level meter

c)Thermometer

d)Photometer

30.What is an echo?

a)A soft sound

b)A sound reflection

c)A loud noise

d)A continuous sound

31.What determines the loudness of sound?

a)Frequency

b)Amplitude

c)Wavelength

d)Speed

32.What is magnetism?

a)Attraction or repulsion between magnetic materials

b)Force of gravity

c)Electrical energy

d)Chemical reaction

33.Which of the following materials is magnetic?

a)Copper

b)Wood
c)Iron

d)Plastic

34.What are the two poles of a magnet called?

a)North and South

b)East and West

c)Positive and Negative

d)Left and Right

36.How do magnetic fields affect compass needles?

a)They cause them to break

b)Theynmake them float

c)They align them with the Earth's magnetic field

d)They change their color

37.What unit is electrical energy measured in?

a)Joules

b)Amperes

c)Watts

d)Volts

38.What is the purpose of a circuit breaker?

a)To store energy

b)To convert energy

c)To interrupt the flow of current

d)To increase voltage

39.What type of current flows in one direction only?

a)Alternating current
b)Direct current

c)Static current

d)Pulsating current

40.What is the main component of a simple electrical circuit?

a)Resistor

b)Capacitor

c)Battery

d)Transformer

41.What does a resistor do in a circuit?

a)Increasesbcurrent

b)Reduces current

c)Stores energy

d)Converts energy

42.What is the role of a switch in an electrical circuit?

a)To increase voltage

b)To connect or disconnect the circuit

c)To generate heat

d)To store energy

43.What is the function of a transformer?

a)To change the form of energy

b)To increase or decrease voltage

c)To store electricity

d)To produce light

1a.in a tabular form list seven minerals, their location and their uses

b. define the following

i. ray of light

ii. beam

c. what does the inner ear consist of

2a.what is a magnetic field

b. what is the chemical composition of a magnet

c.list five economic importance of pants and animal resources

3a.Explain light energy

b.explain the types of rays

c.what is the difference between ammeter and voltmeter

4. differentiate between circuit breakers and fuses

b. metion 5 importance of skill acquisition

c.c.what is an incident ray

5. state the law of magnetism

b. given that the angle of incidence on a rectangular block is 65⁰ and the refractive index of the medium
is 1.450⁰ determine the angle of refraction

c. explain refraction of light

6.. differentiate between real and apparent depth

b. what is the resistance for resistors in a series circuit