Instructions
Read each question carefully and answer to the best of your ability. The questions are divided by chapter and subtopic. Good luck!
Chapter 5: Properties of Matter
5A: Properties of Evaporation
- Fill in the blanks to complete the sentences about evaporation.
Evaporation is the process where a liquid turns into a ____________ without boiling. The rate of evaporation can be increased by increasing the ____________ of the liquid, increasing the ____________ area exposed to the air, and by increasing the ____________ flow (wind) over the surface.
5B: Boiling and Evaporation
- Complete the table below to compare boiling and evaporation.
| Feature | Evaporation | Boiling |
|---|---|---|
| Temperature | Can occur at any temperature. | |
| Location in Liquid | Occurs throughout the entire liquid. | |
| Bubbles | Bubbles are formed. |
Chapter 6: Physical and Chemical Changes
6A: Physical Changes
- Are the following statements True or False? Circle the correct answer.
- a) Tearing a piece of paper is a physical change. (True / False)
- b) In a physical change, a new substance is formed. (True / False)
- c) Melting an ice cube is an example of a physical change. (True / False)
6B: Dissolving
- Match the term with its correct definition.
A. Solute 1. The liquid in which a substance dissolves. B. Solvent 2. The mixture formed when a substance dissolves in a liquid. C. Solution 3. The substance that dissolves in a liquid.
6C: Chemical Reactions
- List three signs that a chemical reaction (a chemical change) may have occurred.
- _________________________
- _________________________
- _________________________
Chapter 7: Effects of Forces
7A: Mass, Weight, and Gravity
- Choose the correct word to complete each sentence.
a) The amount of 'stuff' in an object is called its (mass / weight) and is measured in kilograms (kg).
b) The force of gravity pulling on an object is its (mass / weight) and is measured in Newtons (N).
c) If you travelled to the Moon, your (mass / weight) would change, but your (mass / weight) would stay the same.
7B: Forces in Action
- What is friction? Give one example of when friction is helpful.
- ____________________________________________________________________
- When are forces on an object described as 'balanced'? What happens to the object's movement when forces are balanced?
- ____________________________________________________________________
Chapter 8: Movement of Light
8A: Reflection of Light
- When light hits a smooth, shiny surface like a mirror, it bounces off. This is called reflection. The "Law of Reflection" states that the angle of incidence is equal to the angle of _______________.
8B: Refraction of Light
- Explain briefly why a straw placed in a glass of water appears to be bent.
- ____________________________________________________________________
____________________________________________________________________
Chapter 9: More About Electrical Circuits
9A: Circuit Symbols and Diagrams
- Match the circuit component to its standard symbol description.
A. Bulb (Lamp) 1. A long line and a short line, representing positive and negative terminals. B. Switch (Open) 2. A circle with a cross inside it. C. Cell 3. A break in the line with a small circle at the end of each line segment. D. Buzzer 4. A circle with a semi-circle inside it, like a small dome.
9B: Types of Circuit
- Imagine you have two circuits, each with two light bulbs. One is a series circuit and the other is a parallel circuit. What happens in each circuit if one of the bulbs breaks?
Series Circuit: __________________________________________________
Parallel Circuit: _________________________________________________
Chapter 10: More about Rocks
10A: Types of Rocks
- Fill in the blanks with the correct type of rock (Igneous, Sedimentary, or Metamorphic).
a) _______________ rocks are formed from cooled magma or lava.
b) _______________ rocks are formed from layers of sand, mud, and pebbles that are squeezed together over a long time.
c) _______________ rocks are formed when other rocks are changed by intense heat or pressure.
10B: The Rock Cycle
- Complete the sentences describing the rock cycle.
When rocks are weathered and eroded, they break down into small pieces called _______________. When magma cools and hardens, it becomes _______________ rock. When a rock is subjected to intense heat and pressure, it can change into a _______________ rock.
Chapter 11: Soil
11A: Types of Soil
- For each soil type, state if its particles are large or small, and if it drains water quickly or slowly.
- Sandy Soil: Particles are _______________, and it drains water _______________.
- Clay Soil: Particles are _______________, and it drains water _______________.
11B: Soil Composition and Plant Growth
- List the four main components of healthy soil.
- 1. _______________
- 2. _______________
- 3. _______________
- 4. _______________
- What is 'humus' and why is it important for plant growth?
- ____________________________________________________________________
Answer Key
Chapter 5: Properties of Matter
- gas, temperature, surface, air
-
Feature Evaporation Boiling Temperature Can occur at any temperature. Occurs only at a specific temperature (the boiling point). Location in Liquid Only occurs on the surface of the liquid. Occurs throughout the entire liquid. Bubbles No bubbles are formed. Bubbles are formed.
Chapter 6: Physical and Chemical Changes
- a) True, b) False, c) True
- A - 3, B - 1, C - 2
- Any three of the following: color change, gas produced (bubbles), heat or light produced, a new solid (precipitate) is formed, a new smell is produced.
Chapter 7: Effects of Forces
- a) mass, b) weight, c) weight, mass
- Friction is a force that opposes motion between two surfaces in contact. A helpful example is the grip between car tires and the road, or the grip of your shoes on the ground.
- Forces are 'balanced' when they are equal in size and opposite in direction. When forces are balanced, a stationary object stays still, and a moving object continues to move at a constant speed and direction.
Chapter 8: Movement of Light
- reflection
- Light travels at different speeds in different materials (mediums). When light passes from the water to the air, it bends (refracts) because it speeds up. This bending makes the part of the straw in the water appear to be in a different position.
Chapter 9: More About Electrical Circuits
- A - 2, B - 3, C - 1, D - 4
- Series Circuit: The other bulb will go out because the break in the first bulb creates a gap in the single path for the electricity.
Parallel Circuit: The other bulb will stay lit because the electricity still has a complete, separate path (branch) to flow through.
Chapter 10: More about Rocks
- a) Igneous, b) Sedimentary, c) Metamorphic
- sediment, igneous, metamorphic
Chapter 11: Soil
- Sandy Soil: Particles are large, and it drains water quickly.
- Clay Soil: Particles are small, and it drains water slowly.
- The four main components are: 1. Minerals (from weathered rock), 2. Organic matter (humus), 3. Air, 4. Water.
- Humus is the dark, organic material in soil, formed from decomposed plants and animals. It is important because it is rich in nutrients that plants need to grow and it helps the soil hold water.