An example of a device that gives heat and light energy is...
fan
board
heater
Sun
The lamp is dimmer than the Sun
False
True
Energy can be destroyed and created.
True
False
The lamp is brighter than the Sun
True
False
Can you run a marathon by eating only one chocolate bar?
No, because 1000 kJ < 7000 kJ
We need ________ to run, jump, and think.
tests
water
books
energy
Unit of energy is
kJ or Kcal
The energy from the Sun can be tranferred to ...........
sound and movement
heat and light
heat and sound
light and sound
Which of these is NOT a source of energy?
Battery
Rock
Food
Flashlight
Which one is a natural light source?
TV
Lamp
Lava
Street light
Can you survive without energy?
Yes
No
Which one is a source of LIGHT?
Table
Lamp
Cup
Heater
Can you play basletball for 20 minutes by eating ONE burger?
Yes, because 1500 kJ > 1000 kJ
Which one is an artificial light source?
LED light
Glow-worm
Firefly
The Sun
Light travels in ............. lines
curved
straight
We take energy from
batteries
food
Sun
books
When you move far away the light sources, the light becomes
brighter
dimmer