1)  What is the largest planet in our solar system? a) Mars b) Earth c) Jupiter d) Venus 2) 2. Which of these is NOT a state of matter? a) Solid b) Liquid c) Gas d) Rainbow 3)  What process do plants use to make their own food? a) Respiration b) Digestion c) Photosynthesis d) Evaporation 4)  What is the Earth's natural satellite? a) The Sun b) The Moon c) Mars d) Venus 5) Which of these animals is a mammal? a) Snake b) Frog c) Dog d) Bird 6) What is the largest organ in the human body? a) Heart b) Brain c) Skin d) Lungs 7)  What is the force that pulls objects towards the Earth? a) Friction b) Gravity c) Magnetism d) Electricity 8) What do we call a group of stars that form a pattern? a) Galaxy b) Constellation c) Planet d) Asteroid 9)  What is the process by which water changes from a liquid to a gas? a) Condensation b) Freezing c) Melting d) Evaporation 10)  What is the main source of energy for our planet? a) Wind b) Water c) The Sun d) Coal

Science: Exploring our World

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