1. Energy can be defined as
the ability to do work the ability to change things.when something not moving.
the ability to reduce friction.
2. Which set shows simple machines
Pen and car.bus and broom.
broom and lever
Hammer and elevator.
3. An example of fuel is?
windfood generator
battery
4.All machines__
are made from metal.make noise.
uses energy. move in any directions.
5.All of the following are sources of energy EXCEPT _____________.
batteries.gasoline
heat fossil fuel
6. Which of the following form of energy is incorrectly matched to its source?.
heat-sun.electrical-battery.
chemical-water. mechanical-mixer.
7. Which of these is used as a lever ?
ropefork cloth
wheel
8. The main source of earth energy is .
gasolinebattery
sun animals
9. Energy of motion is .
potentialkinectic energy magnectic energy
nuclear energy>
10.What is the name given to the amount of energy used to measure food .
millimetrecalorie gram
degree
11.Carbohydrates,fats, proteins, vitamins, and minerals are called .
diet.lactose.
nutrients cellulose.
12. Goitre is cause by the lack of .
ironiodine phosphorus
calcium
13.The blanket of air surrounding the earth is .
space.make noise.
atmosphere. clouds.
14.The root of the plant is very important it performs several functions EXCEPT: .
transport water from the soil.transport nutrients to the plant
hold the plants in place.
make food.
15.The electricity produced in water is called .
hydro electricity aqua electricity.running electricity.
electricity.
16.Which of the following is the best conductor of heat?
wood.metal. air.
water.
17.Another word that we can used for all living things is
humansorganisms organs
habitats
18.What is the general name for the place where plants and animals live
bottle garden.habitat terrarium
aquarium.
19.At the start of December, Ashton noticed that his gungo pea plants had formed flowers. Shortly after, there were pea pods with seeds that grew from them. Which main characteristics of living things did Ashton observe?
excretion of seeds.reproduction in plants. response to air.
nutrition of seeds.
20.A hypothesis is
An answer.An educated guess. An experiment.
A random thought
21.What do you do to test a hypothesis?
think about a machine.Guess.
A create a data
design an Experiment.
22.What is the part of the eye that refracts light towards the retina and changes shape according to distance of object?
cornearetina
iris
lens
23.Which part of the eye is messenger of electro-chemical signals from the eye to the brain?
sclera.blood vessel
iris
optic nerve
24.What are variables in a fair test?
Objects that you cannot move.Variables are things you cannot change in a fair test.
Writing science notes.
Variables are things you can change in a fair test.
25.The ear does the following jobs:
Process soundsCollect sounds
Sends sound signals to your brain
All of the above
Label the eye diagram.
_________
_________
_________
_________
_________
_________
26.Goitre is caused by a lack of ______________:
iron.calcium
phosphorus
iodine
27.A deficiency of protein in the diet of growing children can result in a disease called?:
night blindnesscurvy
goiter
kwashiorkor
28.Scurvy is caused by a lack of ______________.:
vitamin Dvitamin C vitamin A
vitamin K
29.Mrs. Gonzales has prepared a list of dishes for her family. What special name is given to this list of dishes?:
)mealbalanced diet
menu Samples
30.Carbohydrates are called energy giving foods; they act as fuels to give us energy. Which set contains carbohydrates?
peanuts, Peas, butterfish, chicken, beef
oranges, pineapples, grapefruits
yam, flour, rice, sugar