1) What are the primary sexual characteristics?
2) What are the secondary sexual characteristics?
3) When does puberty occur?
4) At what do girls reach puberty?
5) What age do boys reach puberty at?
6) Parts of the female reproductive system
7) What are the ovaries?
8) What are the fallopian tubes?
9) What is the uterus?
10) What is the vagina?
11) How are the female genital organs called?
12) Parts of the male reproductive system
13) What is the function of the testes?
14) What are the vas deferens for?
15) What is the urethra for?
16) What do the seminal vesicles and the prostate gland do?
17) What are the male external genital organs?
18) Are human beings oviparous or viviparous? Why?
19) Which are the sex cells?
20) What is the egg cell?
21) Explain the process of menstruation
22) What are the male sex cells?
23) How does the fertilization occur?
24) What is the name of the first cell of the new human being with the DNA of the parents?
25) What is the embryo?
26) Where is the embryo implanted?
27) How does the embryo develop?
28) What is a foetus?
29) when is the foetus formed?
30) Define pregnancy
31) Stages of labour
32) What is the belly button?
33) What is lactation?
34) When do secondary sexual characteristics develop?
35) Do men or women have more facial and body hair?
36) What gland sends hormones to the genital organs?
37) Which sexual characteristics do we have when we are born?
38) These organs produce sperm cells……………………………………………………………
39) This is the bag of skin which contains the testicles………………………………………………..
40) This is the organ where the baby develops during pregnancy…………………………………
41) These connect the ovaries to the uterus…………………………………………………….
42) These organs produce the female eggs necessary for reproduction…………………………….
43) One egg cell matures and passes through the Fallopian tubes every…………………….
44) If the egg is………………………….., it leaves the body through the vagina.
45) 200 million sperm are produced every……………………..from the beginning of puberty.
46) A………………………….is the first cell of the new human being.
47) The ……………………………….is implanted in the wall of the uterus.
48) Write the chronological order of the stages of labour.
49) What is energy?
50) What do we use energy for?
51) Energy sources. Differentiate between them and give examples.
52) Types of energy. Define and give examples.
53) What is energy conversion? Give a couple of examples.
54) What is light?
55) What is a shadow?
56) Say the names of 3 transparent objects
57) Say the names of 3 translucent obects
58) Say the names of 3 opaque objects
59) What is reflection?
60) In how many basic colors can white light be decomposed?
61) Explain why a green car is green.
62) When does refraction happen?
63) How is sound produced?
64) Differentiate between echo and reverberation
65) What are the qualities of sound?
66) Give an example of different pitches.
67) Give an example of different tones.
68) Give an example of different intensity.
69) Biomass/ natural gas/ sunlight/ coal/ oil/ water/ uranium/ wind/ fossil fuels. CLASSIFY into renewable and non-renewable
70) In a fan, electrical energy is transformed into……………………………..
71) At a nuclear power station, nuclear energy is transformed into………………………………….
72) In a light bulb, electrical energy is converted into…………………………………..
73) In a car, mechanical energy is transformed into…………………………………………
74) How fast does light travel?
75) What makes a shadow form?
76) What happens in a rainbow?
77) When is an object charged neutrally?
78) When is an object charged positively?
79) When is an object charged negatively?
80) What happens to opposite charges? And to the same charges?
81) Electrical current flows easily through conductors. True of false?
82) Rubber is a conductor. True or false?
83) Electrical current does not flow easily through insulators. True or false?
84) Most metals are insulators. T/F
85) An electric circuit has four basic components. T/F
86) When the switch is ON, it opens the electric circuit. T/F
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