1) The batteries we put inside the toy car are considered a.......... a) vehicles b) robots c) source ofenergy. 2) The missions of Mars depend on............. a) chemical b) source ofenergy. c) vehicles and robots. 3) The stored energy in the food we eat is........... a) chemical energy. b) source ofenergy. c) the Sun 4) The main source of energy on the Earth's surface is........... a) chemical b) the Sun c) vehicles 5) The flow of energy from the Sun until it reaches us is known as............ a) energychain. b) stored energy c) source ofenergy. 6) The energies produced by the hair dryer are........ a) thermal, kinetic, and sound  b) electric, kinetic and light c) sound , light and solar energy  7) A plant transforms the .........energy of the Sun into the ........ energystored in sugar. a) kinetic , sound b) light , Chemical c) Thermal , kinetic 8) When wood is burned, it releases......... a) thermal energy b) Kinetic energy c) chemical energy 9) The energy coming from a power plant comes through burning........... a) reaches b) coal andnatural gas. c) light energy. 10) In the........ bulb, the electrical energy is converted into light energy. a) electrical b) thermal c) chemical 11) In plants, the..... energy is converted into......energy. a) light , chemical b) Thermal , chemical c) Sound , chemical 12) The output energies in electric bulbs are..... and ...... energies. a) light , thermal b) Sound , thermal c) solar , thermal 13) In the toy car that is operated by a battery, ........ energy is convertedinto ........energy. a) chemical,kinetic b) electric , kinetic c) sound , kinetic 14) When you push on the bike pedals with your legs, chemical energy isconverted into ....... energy. a) thermal b) Kinetic c) sound 15) Energy cannot be ...... nor........ a) created,destroyed b) produced c) releases 16) The spacecraft takes about five months, usually longer to reach Mars. a) × b) ✓ 17) The solar energy is a clean source of energy a) × b) ✓ 18) The energy stored in a battery is chemical energy a) × b) ✓ 19) Curiosity Rover is used to explore the moon a) × b) ✓ 20) 5. Mars is located a few kilometers away from Earth. a) × b) ✓ 21) The distance between Earth and Mars is about 54 million km. a) × b) ✓ 22) Energy can be converted into another from. a) × b) ✓ 23) The toy car needs a source of energy to be operated. a) × b) ✓ 24) The energy stored in a soap dispenser is potential energy. a) × b) ✓ 25) The energy produced from the Sun is light energy only. a) × b) ✓ 26) In the electric bell, electrical energy is changed into sound energy. a) × b) ✓ 27) In the cell phone, electrical energy is stored in the battery. a) × b) ✓ 28) It is the main source of energy on the Earth's surface a) The Sun b) The moon 29) It is the path that shows the energy flow from its source to the device. a) Solar energy b) Energy chain 30) It is the pathway from the input to the output energy a) Energy chain b) Solar energy 31) Give reasons for: The Sun is considered the main source of energy on the Earth's surface a) Because all energy chains on the Earth start with the Sun. b) Because when we eat food, our body stores chemical energy c) Because the chemical energy stored inside the wood changes intothermal energy. 32) Give reasons for:. The body has energy inside it. a) Because all energy chains on the Earth start with the Sun. b) Because when we eat food, our body stores chemical energy c) Because the chemical energy stored inside the wood changes intothermal energy. 33) Give reasons for: There is a change in energy when burning wood. a) Because when we eat food, our body stores chemical energy b) Because all energy chains on the Earth start with the Sun. c) Because the chemical energy stored inside the wood changes intothermal energy. 34) Give reasons for: You feel heat when you hold your hands near a light bulb. a) Because energy can neither be created nor destroyed, but onlyconverted from one form to another. b) Because the light bulb changes electrical energy into light energyand thermal energy. c) Because the chemical energy stored in the food changes into kineticenergy, then some of the kinetic energy changes into thermal energy 35) What happens when:reasons for: When you push on the bike pedals with your legs, heat energy is produced. a) Because energy can neither be created nor destroyed, but onlyconverted from one form to another. b) Because the light bulb changes electrical energy into light energyand thermal energy. c) Because the chemical energy stored in the food changes into kineticenergy, then some of the kinetic energy changes into thermal energy 36) Energy can change forms, but it never disappears. a) Because the light bulb changes electrical energy into light energyand thermal energy. b) Because energy can neither be created nor destroyed, but onlyconverted from one form to another. c) Because the chemical energy stored in the food changes into kineticenergy, then some of the kinetic energy changes into thermal energy 37) What happens when: You turn on an electric iron a) The electrical energy changes into thermal energy. b) The chemical energy stored inside coal changes into thermal energy.

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