WorksheetsForm 4 Chapter 1
Total questions: 70
Worksheet time: 1hrs 8mins
1. What is a scientist?
A person who cures people.
A person who writes writes stories.
A person who makes observations, asks questions and does extensive research work in finding the answers to many questions others may not know about.
Anything that can change in an experiment is called...........
measurement
variable
observation
Anything that can change in an experiment is called...........
measurement
variable
observation
The Scientific Method is....
ways scientist make problems and ask questions
ways scientist never solve problems
ways scientists answer questions and solve problems
The first step in the scientific method is .............
Draw conclusions
Ask a question
Record results
Make observations
A possible answer to a question or problem. Also called an educated guess.
Observation
Hypothesis
Question
The seventh step in the scientific method is....
Draw conclusions
Analyze your results
Share your results
Make a Hypothesis
Information you collect during an experiment is called.....
chart
hypothesis
graph
data
Bones meet at.....
Joints
Ligaments
The rib cage
What is the smallest bone in the body?
Patella
Stirrup
Thigh
How many bones does an adult human have....
500
110
206
55
Which of the following is not a type of muscle?
smooth muscle
rough muscle
cardiac muscle
skeletal muscle
What are muscles made of?
Tendons and ligaments
Tough elastic fibers
Stretchy cells and fibers
What mineral makes bones strong?
Oxygen
Iron
Calcium
Which part of the skeleton protects the lungs?
The femur
The rib cage
The skull
Which of the following is NOT a function of the skeleton?
A framework of bones
Protecting organs
Supporting the body
To allow the movement
_______ is push or a pull
Motion
Force
Speed
______ is a contact force that opposes the motion of an object.
Friction
Gravity
Mass
________ is a noncontact force that pulls on metal objects containing iron.
Force
Weight
Magnetism
_______ is a noncontact force that pulls objects toward Earth.
Magnetism
Gravity
Friction
_________ is the pull of gravity on an object.
Mass
Weight
Speed
________ is the amount of matter in an object.
Mass
Weight
Force
An object will move ________ when you push it harder.
Faster
Slower
Smooth surfaces cause less friction. Rough surfaces cause_______ friction.
More
Less
Balanced forces _________.
Cause a change in the motion
Cause no change in the motion
Same poles of a magnet ________.
Repel each other
Attract each other
opposite poles of a magnet_______.
Repel each other
Attract each other
Which object would attract to the magnet?
A plastic bottle
A paper clip
A pencil
If you traveled to the moon your weight would ________.
Not change
Change
Your mass on another planet will_______.
Change
Not change
8.7: Combustion is when a __________ reacts with oxygen
petrol
fuel
fire triangle
carbon dioxide
What is the purpose of a fire blanket?
To remove the oxygen element of the fire triangle
To remove the heat element of the fire triangle
To remove the fuel element of the fire triangle.
Air is a _________ of various gases, water vapour, dust and microorganisms
element
compound
mixture
Inert gases also can be known as
Noble gases
Unstable gases
Reactive gases
The percentage of oxygen in air is
21%
78%
0.97%
0.03%
The percentage of nitrogen gas in air is
21%
78%
0.97%
0.03%
The percentage of inert gases in air is
21%
78%
0.97%
0.03%
Oxygen is used
To carry out photosynthesis
In carbonated drink
for cooking
This gas is used in fire extinguisher
Oxygen
Carbon dioxide
Helium
Nitrogen
Carbon cycle is the cycle that
maintains the content of carbon dioxide by continuously taking carbon dioxide from the air and returning it to the air
maintains the content of oxygen by continuously taking oxygen from the air and returning it to the air
Oxygen cycle is the cycle that
maintains the content of carbon dioxide by continuously taking carbon dioxide from the air and returning it to the air
maintains the content of oxygen by continuously taking oxygen from the air and returning it to the air
Three conditions needed for combustion (tick 3 answers)
Fuel
Heat
Oxygen
Carbon dioxide
Which gas creates green house effect in the atmosphere?
Carbon dioxide
Ozone
Oxygen
None of these
As we go up to the layers of atmosphere, the pressure
Increases
Decreases
Remains the same
What do you mean by insolation?
Outgoing rays
insulators rays
incoming solar energy
None of these
Which of the following describes what happens when we breathe out?
1
2
3
4
Which of the following is not used for breathing?
Skin
Gills
Lungs
Feelers
The following process takes place in plants.
What is this process called?
Transport
Circulation
Respiration
Photosynthesis
The diagram below shows part of a leaf viewed under a microscope. Use the diagram to answer question 4 & 5.
Which of the following describe S?
It is a cell.
It is a tissue.
It is an organ.
It is an opening.
S is mostly found on the underside of a leaf.
Which of the following explains why is this so?
To avoid direct sunlight which may damage the leaf.
To make it more convenient for the leaf to make food.
To allow ease of movement of air in and out of leaf.
To reduce the rate of evaporation of water from the leaf.
Which of the following statements describes the cells in our body correctly?
A. The cells in our body are usually packed tightly together.
B. The cells in our body come in different shapes and sizes.
C. The structures of our body cells are related to their functions.
D. New cell are formed in our body to replace cells which are old or damaged.
B only
A and C only
A, B and D only
A, B, C and D
Which of the following statements describes what will happen to a cell when the nucleus stop functioning?
The cell will lose its shape.
The cell will divide to produce more cells.
The cell will change its function.
The activities inside the cell will not be well-controlled.
Which of the following statements about the circulatory system are true?
A. Our pulse rate increases when we are anxious.
B. The number of times our heart beats in one minute is called our pulse rate.
C. Blood pumped to various parts of our body as a result of the contraction of our heart muscles.
D. Our heart, blood vessels and the blood that flows through them, together, form the circulatory system.
A, B and D only.
A, C and D only.
B, C and D only.
A, B, C and D.
Which of the following substances are transported by blood?
A. Water
B. Waste materials
C. Undigested food
D. Oxygen and Carbon Dioxide
A and D only.
A, B and D only.
A, C and D only.
A, B, C and D
In which of the following circuits will the bulb light up?
The table shows four brands of batteries and the amount of time they allowed a torch to light up until its bulb stopped glowing.
Which of the following statements supports the data shown in the table?
Brand B is the most expensive brand of battery.
Brand D causes the torch to shine brighter than brand C.
Brand C is a better brand of battery compared to brand B.
Brand A has the shortest life span compared to the other brands of batteries.
Study the diagram carefully. Use the diagram to answer questions 13 and 14.
What happens when bulb E blows?
Only bulb C will light up.
Only bulbs A, B and D will light up.
Bulbs A, B, C and D will not light up.
Bulbs A, B, C and D will continue to light up.
Which bulb, when blown, will result in only two bulbs lighting up?
Bulb A
Bulb B
Bulb C
Bulb D
Which pair of switches in the circuit below must be closed in order fro both bulbs to light up?
Switches 1 and 2
Switches 2 and 3
Switches 3 and 4
Switches 1 and 4
The diagram below shows four kinds of fruits.
Which of the fruits will split open forcefully when ripe to release their seed?
Balsam and rubber
Watermelon and angsana
Balsam, rubber and angsana
All of the above
Jane wanted to find out how two different kinds of seeds would germinate when the conditions for germination are kept the same. Which variables should she keep constant?
A. Type of seeds.
B. Amount of soil.
C. Amount of water.
D. Type of container used
A and C only
B and D only
B, C and D only
A, B, C and D
Why do plants scatter their seeds?
A. To prevent overcrowding.
B. To allow plants to grow in new places.
C. To reduce competition for food and water.
D. To ensure that new kinds of plants can grow.
A and B only
C and D only
A and C only
A, B, C and D
The diagram below shows the female human reproductive system.
Where are the eggs produced?
1
2
3
4
Which of the following must occur in order for fertilisation to take place successfully?
The fertilised egg must divide.
The sperm must be strong and healthy.
The egg and sperm must meet and fuse.
The egg must be released from the ovary.
Which of the following statements about reproduction in humans are true?
A. Only one sperm is required to fertilise an egg.
B. It takes about nine months for a baby to become fully developed.
C. Fertilisation of the sperm and egg takes place inside the female's body.
D. The development of the fertilised egg takes place outside the female's body.
A and C only
B and D only
A, B and C only
A, B, C and D
