Measurements
Give 4 examples of things we can measure
Bonus: write the SI unit for each
Length (m)
Mass (kg)
Time (s)
Volume (m3)
Why do we need food?
In order to get energy through respiration, which keeps life processes going that keep our body healthy and alive.
How many bones are there in the human skeleton?
Bonus: What is the purpose of bones?
206
Bonus:
Protection
Support for organs
(movement)
Are you ready for your Christmas holiday?
YES!
What is measurement and why do we need it?
Measurement is describing our observations scientifically with units in order to be accurate and objective instead of subjective.
We need measurement so we don't rely on our senses as those in many cases are different for all of us.
Mention at least 5 of the 7 characteristics of life.
Bonus: mention all 7
Feeding
Respiration
Movement
Growth
Excretion (getting rid of waste)
Reproduction
Irriability (being sensitive to the surroundings)
Living things are also called living organisms how come they have this name?
Because most living things have bodies composed of organs. Organs are a part of the body that performs special tasks to help the organism live.
What is it that makes a dough rise?
CO2
Define what physics means
The study of how matter and energy interact. In other words it is the scientific study of all the information we gather with our senses.
Write the word equation for respiration and describe what i means.
Glucose + oxygen --> Carbon dioxide + water
A process that happens in our bodies. Respiration describes the process in which energy is released from food. This energy is used for almost all life processes in our bodies (e.g. growth and movement).
How do messages travel through the nervous system?
As tiny electrical signals that are sent to and from the brain.
What are the five main organs in the body of a flowering plant?
The root, the stem, the leaf, the flower and the bud
Which two liquids are usually found in thermometeres and what happens to these liquids when we use a thermometer in both cold and warm places?
Mercury and alcohol. The liquids expand when warmed and contracts when cooled.
*A thermometer compares the temperature of the substance it is immersed with the freezing point and boiling point of water.
How is a green plant's way of feeding different from an animal's way of feeding?
A green plant makes its own food from air, water, sunlight and chemicals in the soil. An animal cannot make its own food. It has to take in it nutrients
Describe what an organ system is ad mention at least 3 different ones.
- Skeletal system (bones)
- Muscle system (biceps muscle)
- Circulatory system (heart)
- Respiratory system (lungs)
- Digestive system (stomach and small intestine)
- Nervous system (brain and spinal cord)
- Excretory system (kidneys and bladder)
- Sensory system (eyes and ears)
- Endocrine system (adrenal glands)
What contains the most energy...
a) 1g of peanut?
b) 1g of sugar?
1g of peanut
On the following picture is a line graph. Answer the questions:
Bonus: What distance has the bus travelled from A-B?
1) O-A and D-E
2) A-B and E-F
3) C-D
4) B-C
What does excretion mean and why is it an important sign of life?
Excretion is the process in which living beings get rid of harmful wastes. In many cases this happens when our bodies have used up the food and the oxygen in the body and only waste is left over. This waste is poisonous so our body gets rid of it through urine, sweat and breathing out.
Describe the respiratory system from when we take in air to breathing out.
Air enters through the nose and passes down the back of the mouth and into the voice box and windpipe. The bottom of the windpipe then divides into two tubes called bronchi. The bronchi carry the air into the lungs. Here some oxygen passes through the walls of the lungs into the blood. Carbon dioxide passes from the blood through the walls of the lungs into the air.
If a car is moving with a constant speed of 80 km/h for 4½ hours, what distance has it travelled?
360 km